THIS WARRANT AND THE SHARES OF COMMON STOCK  PURCHASABLE  UPON  EXERCISE OF THIS
WARRANT HAVE NOT BEEN  REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS AMENDED,
OR  APPLICABLE  STATE  SECURITIES  LAWS AND MAY NOT BE SOLD,  OFFERED  FOR SALE,
PLEDGED OR  HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE  REGISTRATION  STATEMENT
UNDER SAID ACT AND APPLICABLE  STATE SECURITIES LAWS RELATING TO SUCH SECURITIES
OR AN OPTION OF COUNSEL  REASONABLY  SATISFACTORY TO MEDJET INC. AND ITS COUNSEL
THAT SUCH REGISTRATION IS NOT REQUIRED.

                                       Right to Purchase 18,272 Shares of Common
                                       Stock of MEDJET INC. (subject to
                                       Adjustment as provided herein).

                          COMMON STOCK PURCHASE WARRANT

                                 April 20, 1998

                  MEDJET  INC.  a  corporation  organized  under the laws of the
State of Delaware (the  "Company")  hereby  certifies  that, for value received,
Judah Wernick, or registered assigns (the "Holder"), is entitled, subject to the
terms set forth below,  to purchase from the Company at any time or from time to
time after the date of this  Warrant  and before  5:00 p.m..  New York time,  on
April 19, 2002 (the  "Expiration  Date"),  up to Eighteen  Thousand  Two Hundred
Seventy Two (18,272)  fully paid and  nonassessable  shares of Warrant Stock (as
hereinafter  defined),  $.001 par value per share, of the Company, at a purchase
price per share equal to one hundred and ten percent (110%) of the lesser of (i)
$6.79 or (ii) the average  closing bid price for the Common  Stock quoted on the
National  Association of Securities  Dealers,  Inc. OTC Bulletin Board (the "OTC
Bulletin  Board")  for the twenty  (20)  trading  day period  ending on the last
trading day immediately  prior to an Automatic  Conversion  Event (as defined in
the  Certificate of Designation of Series A Preferred Stock of the Company filed
by the  Company  with the  office  of the  Secretary  of  State of the  State of
Delaware on April 20, 1998) (such purchase price per share as adjusted from time
to time as herein  provided is referred to herein as the "Purchase  Price").  In
the event this Warrant is exercised in whole or in part prior to the  occurrence
of an Automatic Conversion Event, the Purchase Price. shall be $7.47. The number
and character of such shares of Warrant Stock and the Purchase price are subject
to adjustment as provided herein.

         At the option of Holder,  this  Warrant may be  exercised in one of the
following "cashless exercise" transactions:

                  (a) The Holder shall have the right to convert, in whole or in
         part,  the Warrants (the  "Conversion  Right") at any time prior to the
         Expiration  Date,  into shares of Common Stock in  accordance  with the
         provisions  of this  paragraph  by the Holder  tendering to the Company
         written  notice of exercise  together with advice of the delivery of an
         order to a broker  to sell part or all of the  shares  of Common  Stock
         underlying  the  Warrants,  subject  to  such  exercise  notice  and an
         irrevocable  order to and an irrevocable  commitment by, such broker to
         deliver to the Company (or its transfer agent) sufficient proceeds from
         the sale of such  shares to pay the  aggregate  Purchase  Price of such
         Warrants and any withholding  taxes All documentation and procedures to
         be  followed  in  connection  with such  "cashless  exercise"  shall be
         approved  in  advance  by  the  Company,   which   approval   shall  be
         expeditiously provided and not unreasonably withheld; or


                  (b) Upon written notice of exercise, the Company shall deliver
         to the Holder (without payment by the Holder of the aggregate  Purchase
         Price)  that  number of shares of Common  Stock  equal to the  quotient
         obtained by dividing (x) the value of the portion of the Warrants being
         exercised  at  that  time  (determined  by  subtracting  the  aggregate
         Purchase  Price for the number of Warrants  being  exercised (in effect
         immediately  prior to the  exercise of the  Conversion  Right) from the
         amount  obtained by  multiplying  the number of shares of Common  Stock
         underlying the Warrants to be exercised by the Fair Market Value of one
         share  of  Common  Stock  immediately  prior  to  the  exercise  of the
         Conversion  Right by (y) the Fair  Market  Value of one share of Common
         Stock immediately prior to the exercise of the Conversion Right.

         As used  herein  the  following  terms,  unless the  context  otherwise
requires, have the following respective meanings:

                           (i) The term Company  shall  include  MEDJET INC. and
         any  corporation  which shall succeed or assume the  obligation of such
         company hereunder.

                           (ii)  The  term  "Common  Stock"   includes  (i)  the
         Company's Common Stock, $.00l par value per share, as authorized on the
         date of the Agreement,  and (ii) any other securities into which or for
         which any of the securities  described in (i) hereof,  may be converted
         or exchanged  pursuant to a plan of  recapitalization,  reorganization,
         merger, sale of assets or otherwise.

                           (iii) The term "Other Securities" refers to any stock
         (other than Common  Stock) and other  securities  of the Company or any
         other  person  (corporate  or  otherwise)  which the Holder at any time
         shall be entitled to receive, or shall have received,  upon exercise of
         the Warrant, in lieu of or in addition to Common Stock, or which at any
         time shall be issuable or shall have been issued in exchange  for or in
         replacement of Common Stock or Other  Securities  pursuant to Section 5
         or otherwise.

                           (iv) The term  "Warrant  Stock"  means the  Shares of
         Common Stock and Other Securities owned or to be owned upon exercise of
         this Warrant and all other warrants in  substantially  the same form as
         this Warrant  issued to Judah Wernick or thereafter to its  Transferees
         (as hereinafter defined).

     1. EXERCISE OF WARRANT.
         
     1.1 NUMBER OF SHARES ISSUABLE ON EXERCISE.  The Holder shall be entitled to
receive,  upon exercise of this Warrant in whole in accordance with the terms of
subsection  1.2 or upon  exercise  of this  Warrant in part in  accordance  with
subsection  1.3,  shares of Warrant  Stock,  subject to  adjustment  pursuant to
Section 5.


     1.2 FULL  EXERCISE.  This  Warrant  may be  exercised  in full by the
Holder by surrender of this Warrant,  with the form of subscription  attached as
Exhibit A hereto (the  "Subscription  Form") duly executed by the Holder, to the
Company at its principal office, accompanied by payment either (a) in cash or by
certified or official  bank check  payable to the order of the  Company,  in the
amount  obtained by multiplying  the number of shares of Warrant Stock for which
this Warrant is then  exercisable  by the Purchase  Price then in effect or, (b)
the surrender to the Company of  securities  of the Company  having an aggregate
Fair Market Value (as hereinafter defined) equal to the aggregate Purchase Price
of the shares of Warrant Stock being  purchased  upon such  exercise;  provided,
however,  that in lieu of the method of payment under clauses (a) or (b) of this
Section  1.2, the Holder may make payment by allowing the Company to deduct from
the number of shares of Warrant  Stock  deliverable  upon such  exercise of this
Warrant a number of shares of Warrant  Stock which has an aggregate  Fair Market
Value  determined  as of the date of such  exercise of this Warrant equal to the
aggregate  Purchase  Price for all  shares  of  Warrant  Stock as to which  this
Warrant is then being  exercised. 

     1.3 PARTIAL EXERCISE.  This Warrant may be exercised in part (but not for a
fractional share) on not more than two (2)occasions by surrender of this Warrant
in the manner and at the place provided in subsection 1.2 except that the amount
payable by the Holder on such partial  exercise shall be the amount  obtained by
multiplying  (a) the number of shares of Warrant Stock  designated by the Holder
in the Subscription Form by (b) the Purchase Price then in effect. The method of
payment shall be as permitted by Section 1.2. On any such partial Exercise,  the
Company,  at its expense,  will forthwith issue and deliver to or upon the order
of the Holder a new Warrant of like tenor,  in the name of the Holder  hereof or
as the Holder (upon payment by such Holder of any  applicable  transfer  taxes),
may request, subject to compliance with applicable securities laws, representing
the  number of shares of  Warrant  Stock  for which  such  Warrant  may still be
exercised.

     1.4 FAIR MARKET VALUE.  Fair Market Value of a share of Warrant Stock as of
a particular  date (the  "Determination  Date")  shall mean:  

     (a) If the  Warrant  Stock is  traded  on an  exchange  or is quoted on the
Nasdaq  National  Market or the  Nasdaq  SmallCap  Market  ("Nasdaq"),  then the
average of the closing or last sale price,  respectively,  reported for the five
business days immediately preceding the Determination Date.

     (b) If the  Warrant  Stock is not traded on an exchange or on Nasdaq but is
traded in the over-the-counter  market or other similar organization  (including
the OTC  Bulletin  Board),  then the  average of the  closing bid and ask prices
reported for the five business  days  immediately  preceding  the  Determination
Date. 

     (c) If the Warrant  Stock is not traded as provided  above,  then the price
determined in good faith by the Board of Directors of the Company, provided that
(1) the  basis or bases of each  such  determination  shall be set  forth in the
corporate  records of the Company  pertaining  to meetings and other  actions of
such board,  and (2) such  records are  available  to the Holder for  inspection
during normal business hours of the Company upon the giving of reasonable  prior
notice. 




     (d) If the Determination Date is the date of a liquidation,  dissolution or
winding up, or any event deemed to be a  liquidation,  dissolution or winding up
pursuant to the Company's  charter,  then all amounts to be payable per share to
Holders of the securities then comprising  Warrant Stock pursuant to the charter
in the event of such  liquidation,  dissolution  or winding  up,  plus all other
amounts to be payable per share in respect of the Warrant  Stock in  liquidation
under the charter,  assuming for the purposes of this clause (d) that all of the
shares of Warrant  Stock then  issuable upon exercise of all of the Warrants are
outstanding at the Determination Date.

     1.5 COMPANY  ACKNOWLEDGMENT.  The Company will, at the time of the exercise
of this  Warrant,  upon the  request of the Holder  acknowledge  in writing  its
continuing  obligation  to afford to the  Holder  any rights to which the holder
shall  continue  to be  entitled  after such  exercise  in  accordance  with the
provisions of this  Warrant.  If the Holder shall fail to make any such request,
such failure shall not affect the continuing obligation of the Company to afford
to the Holder any such rights.

     1.6 TRUSTEE FOR WARRANT HOLDERS.  In the event that a bank or trust company
shall have been appointed as trustee for the Holder  pursuant to subsection 4.2,
such bank or trust  company  shall  have all the  powers and duties of a warrant
agent appointed pursuant to Section 11 and shall accept, in its own name for the
account of the Company or such successor person as may be entitled thereto,  all
amounts otherwise payable to the Company or such successor,  as the case may be,
on exercise of this  Warrant  pursuant to this  Section 1. 

     2. DELIVERY OF STOCK  CERTIFICATES,  ETC. ON EXERCISE.  The Company  agrees
that the shares of Warrant Stock  purchased  upon exercise of this Warrant shall
be deemed to be issued to the  Holder as the record  owner of such  shares as of
the  close of  business  on the date on  which  this  Warrant  shall  have  been
surrendered  and  payment  made  for  such  shares  as  aforesaid.  As  soon  as
practicable  after the exercise of this  Warrant in full or in part,  and in any
event  within  five  business  days  thereafter,  the  Company  at  its  expense
(including  the payment by it of any  applicable  issue  taxes) will cause to be
issued  in the name of and  delivered  to the  Holder,  or as the  Holder  (upon
payment by such Holder of any applicable transfer taxes) may direct,  subject to
compliance with applicable  securities  laws, a certificate or certificates  for
the number of duly authorized and validly issued,  fully paid and  nonassessable
shares of Warrant:  Stock to which the Holder shall be entitled on such exercise
plus,  in lieu of any  fractional  share to which the Holder would  otherwise be
entitled cash equal to such fraction multiplied by the then Fair Market Value of
one full share, together with any Other Securities and property (including cash,
where applicable) to which the Holder is entitled upon such exercise.

     3.   ADJUSTMENT   FOR   DIVIDENDS   IN   OTHER   STOCK,   PROPERTY,    ETC.
RECLASSIFICATION.  ETC. In case at any time or from time to time, the Holders of
securities  then comprising  Warrant Stock shall have received,  or (on or after
the record date fixed for the determination of stockholders eligible to receive)
shall have become entitled to receive, without payment therefor,

     (a)  additional,  Common Stock or Other  Securities or property (other than
cash) by way of dividend, or





     (b) any cash  (excluding  cash dividends  payable solely out of earnings or
earned surplus of the Company), or

     (c)  additional  Common Stock or Other  Securities  or property  (including
cash)  by  way  of  spin-off,  split-up,   reclassification,   recapitalization,
combination of shares or similar corporate rearrangement,  other than additional
shares  of  Warrant  Stock  issued  as a  stock  dividend  or in a  stock  split
(adjustments  in respect of which are  provided  for in Section  5), then and in
each such case the  Holder,  on the  exercise  hereof as  provided in Section 1,
shall be entitled to receive the amount of Common Stock and Other Securities and
property (including cash in the cases referred to in subdivisions (b) and (c) of
this Section 3) which the Holder  would hold on the date of such  exercise if on
the date hereof the Holder had been the holder of record of the number of shares
of Warrant  Stock  called for on the face of this  Warrant  and had  thereafter,
during  the  period  from  the date  hereof  to and  including  the date of such
exercise,  retained such shares and all such  additional  Common Stock and Other
Securities and property (including cash in the cases referred to in subdivisions
(b) and (c) of this Section 3) receivable by the Holder as aforesaid during such
period,  giving  effect to all  adjustments  called  for during  such  period by
Section 4 and 5.

     4. ADJUSTMENT FOR REORGANIZATION, CONSOLIDATION, MERGER, ETC.

     4.1 REORGANIZATION, CONSOLIDATION, MERGER, ETC. In case at any time or from
time to time the Company shall (a) effect a reorganization, (b) consolidate with
or merge into any other person,  or (c) transfer all or substantially all of its
properties  or  assets  to any  other  person  under  any  plan  or  arrangement
contemplating  the  dissolution  of the Company,  then,  in each such case, as a
condition  to  the  consummation  of  such a  transaction  proper  and  adequate
provision  shall be made by the  Company  whereby the  Holder,  on the  exercise
hereof as  provided  in  Section 1 at any time  after the  consummation  of such
reorganization   consolidation   or  merger  or  the  effective   date  of  such
dissolution,  as the case  may be shall  receive  in lieu of the  Warrant  Stock
issuable on such exercise prior to such consummation or such effective date, the
Common Stock and Other  Securities  and property  (including  cash) to which the
Holder would have been entitled  upon such  consummation  or in connection  with
such  dissolution,  as the case may be,  if the  Holder  had so  exercised  this
warrant, immediately prior thereto, all subject to further adjustment thereafter
as provided in Sections 3 and 5.

     4.2 DISSOLUTION.  In the event of any dissolution of the Company  following
the  transfer  of all or  substantially  all of its  properties  or  assets in a
transaction  contemplated by Section 4.1(c),  the Company,  simultaneously  with
such dissolution,  shall distribute or cause to be distributed to the Holder the
Common  Stock  and  Other   Securities  and  property   (including  cash,  where
applicable)  which would be receivable by the Holder it the Holder had exercised
its Warrant in full  immediately  prior to such  dissolution,  less an amount of
Common  Stock  Other  Securities,  property  and cash with a value  equal to the
Purchase Price.

     4.3 CONTINUATION OF TERMS. Upon any reorganization,  consolidation,  merger
or transfer  referred to in this Section 4, this Warrant shall  continue in full
force and  effect  and the terms  hereof  shall be  applicable  to the shares of
Common Stock and Other  Securities  and property  receivable  on the exercise of
this Warrant after the  consummation  of such  reorganization  consolidation  or
merger,  as the case may be,  and shall be  binding  upon the issuer of any such
Common Stock or Other Securities,  including,  in the case of any such transfer,
the person acquiring all or substantially all of the properties or assets of the
Company,  whether or not such person shall have  expressly  assumed the terms of
this Warrant as provided herein. 



     5. OTHER ADJUSTMENTS.

     5.1  EXTRAORDINARY  EVENTS  REGARDING  WARRANT STOCK. In the event that the
Company shall (a) issue additional  shares of the Warrant Stock as a dividend or
other  distribution on outstanding  Warrant Stock, (b) subdivide its outstanding
shares of Warrant Stock, or (c) combine its outstanding  shares of Warrant Stock
into a smaller number of shares of Warrant Stock,  then, in each such event, the
Purchase  Price  shall,  simultaneously  with the  happening  of such event,  be
adjusted by multiplying the then Purchase Price by a fraction,  the numerator of
which  shall be the number of shares of Warrant  Stock  outstanding  immediately
prior to such event and the  denominator  of which shall be the number of shares
of Warrant Stock  outstanding  immediately  after such event, and the product so
obtained  shall  thereafter be the Purchase  Price then in effect.  The Purchase
Price, as so adjusted, shall be readjusted in the same manner upon the happening
of any successive event or events described herein in this Section 5. The number
of shares of Warrant  Stock that the Holder  shall  thereafter,  on the exercise
hereof as provided in Section 1, be entitled to receive  shall be  increased  or
decreased to a number  determined by multiplying the number of shares of Warrant
Stock that would  otherwise  (but for the  provisions  of this  Section  5.1) be
issuable  upon such  exercise  by a fraction of which (a) the  numerator  is the
Purchase Price that would otherwise (but for the provisions of this Section 5.1)
be in effect,  and (b) the  denominator  is the Purchase  Price in effect on the
date of such exercise.

     5.2 ADJUSTMENT FOR SALE OF ADDITIONAL SHARES.

     (a)  Except  with  respect  to the  shares of Common  Stock  issuable  upon
conversion of the shares of the Company's  convertible  preferred  stock offered
for  sale  by  the  Company  pursuant  to  the  Confidential  Private  Placement
Memorandum  dated January 12, 1998, as  supplemented  by Supplement  No. 1 dated
February  27,  1998  to  the  Confidential   Private  Placement  Memorandum  and
Supplement  No. 2 dated March 18,  1998 to the  Confidential  Private  Placement
Memorandum,  as the  same  may be  from  time  to time  be  further  amended  or
Supplemented,  if the Company  shall after the date hereof issue any  additional
shares of Common  Stock of any class at a price per share less than the  greater
of (1) the Fair Market value of such Common Stock as of the date of grant or (2)
the Purchase Price in effect immediately prior to such issuance or sale, then in
each such case the purchase  Price shall be reduced to an amount  determined  by
multiplying the purchase Price by a fraction:

     (i)  the  numerator  of which  shall be (x) the  number of shares of Common
          Stock  of all  classes  outstanding  (excluding  treasury  shares  but
          including Warrants,  options and convertible Securities (as defined in
          the  Warrant  Agreement  dated  as  of  August  6,  1996  executed  in
          connection with the company's  initial public  offering),  on an as-if
          exercised or  converted  basis)  immediately  prior to the issuance of
          such  additional  shares of Common stock plus (y) the number of shares
          of  Common  Stock  which  the Net  Aggregate  Consideration  Per Share
          received by the company for the total number of such additional shares
          of Common Stock so issued would  purchase at the purchase Price (prior
          to adjustment), and




     (ii) the  denominator  of which shall be (x) the number of shares of Common
          Stock  of all  classes  outstanding  (excluding  treasury  shares  but
          including Warrants,  options and Convertible  Securities,  on an as-if
          exercised or  converted  basis)  immediately  prior to the issuance of
          such  additional  shares of Common  stock  plus (y) the number of such
          additional  shares of Common  Stock so issued.  

     For purposes of this paragraph  5.2, if a part or all of the  consideration
received by the Company in connection  with the issuance of shares of the Common
Stock or the issuance of any of the securities  described in paragraph (b) below
of this paragraph 5.2 consists of property other than cash,  such  consideration
shall be  deemed  to have the same  value  as is  recorded  on the  books of the
Company with respect to receipt of such property so long as such recorded  value
was  determined  in good faith by the Company's  Board of  Directors,  and shall
otherwise be deemed to have a value equal to its fair market value.

     (b) For the purpose of this  paragraph  5.2, the issuance of any  warrants,
options or other  subscription  or  purchase  rights  with  respect to shares of
Common Stock of any class and the issuance of any  securities  convertible  into
shares of Common stock of any class (or the issuance of any warrants, options or
any rights  with  respect  to such  convertible  securities)  shall be deemed an
issuance at such time of such Common  Stock if the Net  Consideration  Per Share
which may be  received by the  Company  for such  Common  stock (as  hereinafter
determined)  shall be less than the Purchase  Price at the time of such issuance
and, except as hereinafter provided an adjustment in the Purchase Price shall be
made upon each such  issuance in the manner  provided in  paragraph  (a) of this
paragraph 5.2 as if such Common Stock were issued at such Net  Consideration Per
Share.  No adjustment of the Purchase  Price shall be made under this  paragraph
5.2 upon the issuance of any additional  shares of Common stock which are issued
pursuant  to the  exercise of any  warrants,  options or other  subscription  or
purchase rights or pursuant to the exercise of any conversion or exchange rights
or in any convertible  securities if any adjustment  shall  previously have been
made upon the issuance of such warrants, options or other rights. Any adjustment
of the Purchase  Price with respect to this  paragraph (b) of this paragraph 5.2
shall be  disregarded  if, as and when the  rights to  acquire  shares of Common
stock  upon  exercise  or  conversion  of  the  warrants,   options,  rights  or
convertible securities which gave rise to such adjustment expire or are canceled
without having been exercised,  so that the Purchase Price effective immediately
upon such  cancellation  or expiration  shall be equal to the Purchase  Price in
effect  immediately prior to the time of the issuance of the expired or canceled
warrants,  options,  rights or  convertible  securities,  with  such  additional
adjustments  as would have been made to that  Purchase  Price had the expired or
canceled warrants, options, rights or convertible securities not been issued. In
the event that the terms of any warrants, options other subscription or purchase
rights or convertible  securities  previously  issued by the Company are changed
(whether  by  their  terms  or for  any  other  reason)  as to  change  the  Net
Consideration  Per  share  payable  with  respect  thereto  (whether  or not the
issuance of such warrants,  options, rights or convertible securities originally
gave rise to an adjustment of the Purchase  Price),  the Purchase Price shall be
recomputed as of the date of such change,  so that the Purchase Price  effective
immediately  upon such change shall be equal to the Purchase  Price in effect at
the  time of the  issuance  of the  warrants,  options,  rights  or  convertible
securities  subject  to such  change,  adjusted  for  the  issuance  thereof  in
accordance  with the terms thereof after giving effect to such change,  and with
such  additional  adjustments as would have been made to that Purchase Price had
the warrants,  options,  rights or  convertible  securities  been issued on such
changed terms.  For purposes of this paragraph  (b), the Net  Consideration  Per
share which may be received by the Company shall be determined as follows:


     (i)  The Net  Consideration  Per Share  shall mean the amount  equal to the
          total amount of consideration, if any, received by the Company for the
          issuance of such warrants,  options, rights or convertible securities,
          plus the  minimum  amount of  consideration,  if any,  payable  to the
          Company upon exercise or conversion thereof,  divided by the aggregate
          number  of shares of  Common  stock  that  would be issued if all such
          warrants,  options,   subscriptions,   or  other  purchase  rights  or
          convertible  securities  were  exercised  or  converted  at  such  net
          consideration per share.

     (ii) The Net  Consideration  Per Share which may be received by the Company
          shall be  determined  in each  instance  as of the date of issuance of
          warrants,  options,  rights or convertible  securities  without giving
          effect to any possible future price - adjustments or rate  adjustments
          which may be applicable with respect to such warrants, options, rights
          or convertible securities and which are contingent upon future events;
          provided that in the case of an adjustment to be made as a result of a
          change  in terms of such  warrants.  options,  rights  or  convertible
          securities,  the Net Consideration Per Share shall be determined as of
          the date of such change. 

     5.3 EXCEPTIONS.

     No  adjustment  pursuant to Section 5 hereof to the  Purchase  Price of the
Warrants will be made, however.

     (i)  upon the sale or  exercise of this  Warrant or any Class A  Redeemable
          Common  Stock  Purchase  Warrants to purchase  one (1) share of Common
          Stock at a  present  exercise  price of  $10.00  per  share  ("Class A
          Warrant"), including without limitation the sale or exercise of any of
          the Class A Warrants  comprising  the Unit Purchase  Options issued in
          connection  with the Company's  initial  public  offering to Patterson
          Travis, Inc., or its affiliates, associates or employees; or

     (ii) upon the issuance or sale of Common Stock or  Convertible  Securities,
          upon the  exercise  of any  rights or  warrants  to  subscribe  for or
          purchase,  or any  options  for  the  purchase  of,  Common  Stock  or
          Convertible  Securities,  whether  or not such  rights,  warrants,  or
          options  were  outstanding  on the date of the  original  sale of this
          Warrant or were thereafter  issued or sold; or 

     (iii)upon the issuance or sale of Common Stock upon  conversion or exchange
          of any  Convertible  Securities,  whether or not any adjustment in the
          Purchase  Price was made or required  to be made upon the  issuance or
          sale  of  such   Convertible   Securities  and  whether  or  not  such
          Convertible  Securities  were  outstanding on the date of the original
          sale of the Warrants or were thereafter issued or sold; or




     (iv) upon the issuance or sale of Common Stock or Convertible Securities in
          a private placement unless the issuance or sale price is less than 85%
          of the Fair Market  Value of the Common Stock on the date of issuance,
          in which case the adjustment shall only be for the difference  between
          85% of the Fair Market Value and the issue or sale price;

     (v)  upon the issuance or sale of Common Stock or Convertible Securities to
          (a)  stockholders of any corporation  which merges into the Company or
          from  which  the  Company  acquires  assets  and  some  or  all of the
          consideration  consists  of  equity  securities  of  the  Company,  in
          proportion  to their stock  holdings of such  corporation  immediately
          prior to the  acquisition  or (b) to any  corporation  or person  from
          which  the  Company  acquires  assets  but  only if no  adjustment  is
          required pursuant to any other provision of this Section 5; or

     (vi) upon  the  issuance  or  sale  of (a) up to  300,000  options  for the
          purchase Common Stock to employees,  officers,  directors, advisors or
          consultants  under the  Company's  1994 Stock Option Plan,  as amended
          (the "Stock Option Plan") or (b) Common Stock issued upon the exercise
          of options  granted  under the Stock Option Plan.  

     6. CHIEF FINANCIAL OFFICER'S CERTIFICATE AS TO ADJUSTMENTS. In each case of
any  adjustment or  readjustment  in the shares of Warrant  Stock  issuable upon
exercise of the  Warrants,  the Company at its expense will  promptly  cause its
Chief Financial Officer to compute such adjustment or readjustment in accordance
with the terms of the  Warrant  and  prepare a  certificate  setting  forth such
adjustment  or  readjustment  and  showing  in detail  the facts upon which such
adjustment  or  readjustment  is  based,   including  a  statement  of  (a)  the
consideration received or receivable by the Company for any additional shares of
Warrant  Stock  issued or sold or deemed  to have been  issued or sold,  (b) the
number of shares of Warrant Stock  outstanding or deemed to be outstanding,  and
(c) the purchase  Price and the number of shares of Warrant Stock to be received
upon exercise of this Warrant, in effect immediately prior to such adjustment or
readjustment  and as adjusted or  readjusted  as provided in this  Warrant.  The
Company will  forthwith  mail a copy of each such  certificate to the registered
holder at such holder's last address as it appears on the books of the Company.

     7. RESERVATION OF STOCK, ETC. ISSUABLE ON EXERCISE OF WARRANT.  The Company
will at all times reserve and keep  available,  solely for issuance and delivery
upon  exercise of this  warrant,  such number of shares of Warrant  Stock as are
issuable from time to time upon the exercise of this Warrant.

     8. ASSIGNMENT; EXCHANGE OF WARRANT. Subject to compliance with applicable
securities  laws,  this  Warrant,  and  the  rights  evidenced  hereby,  may  be
transferred by the Holder (the  "Transferor")  with respect to any or all of the
shares of Warrant Stock  underlying this Warrant;  provided,  however,  that the
following  conditions have been satisfied:  (x) at the time of such transfer the
Transferee  (as  hereinafter  defined)  provides to the Company in writing  such
representations  and warranties as the Company may reasonably  request regarding
the status of the Transferee as an "accredited  investor" as defined in Rule 501
promulgated under the Securities Act and (y) based solely on the representations
and warranties provided pursuant to clause (x) above, there are not, at the Lime
of the  proposed  transfer,  more than ten  holders  of  Warrants  which are not
"accredited  investors." On the surrender for exchange of this Warrant, with the
Transferor's  endorsement  in  the  form  of  Exhibit  B  attached  hereto  (the
"Transferor Endorsement Form") if to the Company, the Company at its expense but
with payment by the Transferor of any applicable  transfer taxes) will issue and
deliver to or on the order of the  Transferor  thereof a new Warrant or Warrants
of like tenor, in the name of the Transferor and/or the transferee(s)  specified
in such  Transferor  Endorsement  Form  (each a  "Transferee"),  calling  in the
aggregate on the face or faces thereof for the number of shares of Warrant Stock
called for on the face or faces of the Warrant so surrendered by the Transferor.
Each Transferee shall be entitled (pro rata according to the number of shares of
Warrant Stock  issuable  under the  Transferee's  new Warrant) to those benefits
accruing to the Transferor under this Warrant prior to the date of issue of such
new Warrant or Warrants.




     9. REGISTRATION RIGHTS; PROCEDURE; INDEMNIFICATION.

     9.1 REGISTRATION RIGHTS.

     (a) As soon as  practicable  following the initial  closing or any other of
two  subsequent  closings  relating  to the  sale of the  Company's  Convertible
Preferred Stock as contemplated by that certain Placement Agency Agreement dated
January 12, 1998 between the Company and Patterson `Travis,  Inc., as amended by
a letter  agreement  dated  March 13, 1998  between  the  Company and  Patterson
Travis,  Inc.,  but no later than July 20, 1998,  the Company  shall prepare and
file a registration  statement with the Securities and Exchange  Commission (the
"Commission")  under the  Securities  Act of 1933,  as amended (the  "Securities
Act"),  covering the Warrant Stock to the extent  required to permit the sale or
other disposition of the Warrant Stock so registered by the holders use its best
efforts to thereof (collectively,  the "Seller"). The Company shall use its best
efforts to cause the  registration  statement to remain effective for the period
ending on the earlier of the: (i) date when all shares of Warrant  Stock covered
by the  Registration  statement have been gold; (ii) date such shares of Warrant
Stock could be sold  pursuant to Rule 144(k) under the  Securities  Act, as Rule
144(k) may  subsequently  be amended,  supplemented  or  modified,  or (iii) the
Expiration Date

     (b) Intentionally Omitted.

     (c) Intentionally Omitted. 

     9.2 REGISTRATION PROCEDURES.

     (a) The Company will, as expeditiously as possible:

     (i)  prepare and tile with the Commission  such  amendments and supplements
          to such  registration  statement and the prospectus used in connection
          therewith  as may be  necessary  to keep such  registration  statement
          effective  for the period  specified  in Section  9.1 above and comply
          with  the  provisions  of  the  Securities  Act  with  respect  to the
          disposition  of all of the Warrant Stock covered by such  registration
          statement  in  accordance   with  the  Seller's   intended  method  of
          disposition set forth in such registration statement for such period;




     (ii) furnish to the Seller, and to each underwriter, if any, such number of
          copies  of the  registration  statement  and the  prospectus  included
          therein  (including  each  preliminary  prospectus)  as  such  persons
          reasonably  may  request  to  facilitate  the  public  sale  or  other
          disposition of the securities covered by such registration statement;

     (iii)use its best  efforts to  register  or qualify  the  Seller's  Warrant
          Stock covered by such  registration  statement under the securities or
          "blue  sky"  laws  of such  jurisdictions  as the  Seller  designates,
          provided,  however, that the Company shall not for any such purpose be
          required  to  qualify  generally  to  transact  business  as a foreign
          corporation or a broker of or dealer in securities in any jurisdiction
          where it is not so  qualified  or to  consent  to  general  service of
          process in any such jurisdiction;

     (iv) list  the  Warrant  Stock   covered  by  such   registration statement
          with  any  securities  exchange  market  system  on which the  Warrant
          Stock of the  Company is then  listed or traded.

     (v)  immediately notify the Seller and each underwriter,it any, at any time
          when a  prospectus  relating  to the  Warrant  Stock is required to be
          delivered  under the Securities  Act, of the happening of any event of
          which the Company has knowledge as a result of which such  prospectus,
          as then in effect,  includes an untrue statement of a material fact or
          omits to state a  material  tact  required  to be  stated  therein  or
          necessary to make the  statements  therein not  misleading in light of
          the circumstances then existing;

     (vi) make  available  for  inspection  by  the  seller,   any   underwriter
          participating  in  any  distribution  pursuant  to  such  registration
          statement, and any attorney, accountant or other agent retained by the
          Seller or  underwriter,  all  financial and other  records,  pertinent
          corporate  documents  and  properties  of the  Company,  and cause the
          Company's officers,  directors and employees to supply all information
          reasonably requested by the Seller, underwriter,  attorney, accountant
          or agent in  connection  with  such  registration  statement.  

     (b) The seller shall provide such cooperation as the Company may request in
connection with the preparation of the Registration Statement.

     9.3 EXPENSES. All expenses incurred by the Company in complying with this
Section 9, including,  without  limitation,  all  registration  and filing fees,
printing  expenses,  fees and  disbursements  of counsel and independent  public
accountants for the Company, fees and expenses (including counsel fees) incurred
in connection  with complying with state  securities or "blue sky" laws, fees of
the National  Association of Securities  Dealers,  Inc., transfer taxes, fees of
transfer  agents and registrars and costs of insurance are called  "Registration
Expenses." All underwriting  discounts and selling commissions applicable to the
sale of Warrant  Stock,  including  any fees and  disbursements  of any  special
counsel to the Seller, are called "Selling Expenses."




         The Company will pay all  Registration  Expenses in connection with the
registration  statements  filed under this  Section 5. All  selling  Expenses in
connection with each registration  statement under this Section 9 shall be borne
by the seller in proportion to the number of shares cold by the Seller  relative
to the number of shares sold under such registration statement or as all sellers
thereunder may agree.

9.4      INDEMNIFICATION AND CONTRIBUTION.

     (a) In  the  event  of a  registration  of  any  Warrant  Stock  under  the
Securities  Act pursuant to this Section 9, the Company will  indemnify and hold
harmless the Seller, each underwriter,  if any, of such Warrant Stock thereunder
and each other person if any, who controls such Seller or underwriter within the
meaning of the Securities Act, from and against any losses,  claims,  damages or
liabilities,  joint or several,  to which the  seller,  or such  underwriter  or
controlling  person may become  subject  under the  Securities  Act or otherwise
insofar as such losses,  claims,  damages or liabilities  (or actions in respect
thereof)  arise out of or are based upon any untrue  statement or alleged untrue
statement of any material fact  contained in any  registration  statement  under
which such Warrant Stock was  registered  under the  Securities  Act pursuant to
this  Section  9,  any  preliminary  prospectus  or final  prospectus  contained
therein,  or any amendment or supplement  thereof,  or arise out of or are based
upon the omission or alleged  omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading,
and will reimburse the seller,  each such  underwriter and each such controlling
person for any legal or other expenses reasonably incurred by them in connection
with  investigating  or defending  any such loss,  claim,  damages  liability or
action;  provided,  however, that the Company will not be liable to the provider
of  information  giving  rise to any claim in any such case if and to the extent
that any such loss, claim, damage or liability arises out of or is based upon an
untrue  statement or alleged untrue statement or omission or alleged omission so
made  in  conformity  with  information   furnished  by  any  such  Seller,  the
underwriter or any such controlling person about itself in writing  specifically
for use in such registration statement or prospectus;  provided further that the
indemnity with respect to any preliminary  prospectus shall not be applicable on
account of any losses, claims,  damages,  liabilities or litigation arising from
the sale of such  securities to any person if the  misstatement  or omission was
corrected in the final prospectus  related thereto but such final prospectus was
not  delivered  by the  seller  to  such  person  at or  prior  to the  sale  of
securities.

     (b) In the event of a  registration  of any of the Warrant  Stock under the
Securities  Act  pursuant  to  Section  9, the Seller  will  indemnify  and hold
harmless the Company,  each person,  if any, who controls the Company within the
meaning  of the  Securities  Act,  each  officer  of the  Company  who signs the
registration statement,  each director of the Company, each underwriter and each
person who controls any  underwriter  within the meaning of the Securities  Act,
from and against all losses, claims,  damages or liabilities,  joint or several,
to which the  Company or such  officer,  director,  underwriter  or  controlling
person may become subject under the Securities Act or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise out
of or are based upon any untrue  statement  or alleged  untrue  statement of any
material fact contained in the  registration  statement under which such Warrant
Stock was  registered  under the  Securities Act pursuant to this Section 9, any
preliminary  prospectus or final prospectus  contained therein, or any amendment
or supplement thereof, or arise out of or are based upon the omission or alleged
omission  to state  therein a material  tact  required  to be stated  therein or
necessary to make the statements therein not misleading,  and will reimburse the
Company and each such officer, director,  underwriter and controlling person for
any legal or other  expenses  reasonably  incurred  by them in  connection  with
investigating or defending any such loss,  claim,  damage,  liability or action,
provided;  however, that the Seller will be liable hereunder in any such case if
and only to the extent that any such loss, claim, damage or liability arises out
of or is based upon an untrue  statement or alleged untrue statement or omission
or alleged  omission made in reliance upon and in  conformity  with  information
pertaining to such Seller, as such,  furnished in writing to the Company by such
Seller  specifically for use in such registration  statement or prospectus,  and
provided,  further, however, that the liability of the Seller hereunder shall be
limited to the proportion of any such loss, claim, damage,  liability or expense
which is equal to the proportion  that the public  offering price of the Warrant
Stock sold by the Seller under such  registration  statement  bears to the total
public offering price of all securities sold thereunder, but not in any event to
exceed  the  proceeds  received  by the seller  from the sale of  Warrant  Stock
covered  by such  registration  statement.  

     (c) promptly after receipt by an indemnified  party  hereunder of notice of
the  commencement  of any action,  such  indemnified  party shall, if a claim in
respect thereof is to be made against the indemnifying  party hereunder,  notify
the  indemnifying  party in writing  thereof,  but the omission so to notify the
indemnifying  party shall not relieve it from any liability which it may have to
such  indemnified  party  other than under  this  Section  9.4(c) and shall only
relieve it from any liability which it may have to such indemnified  party under
this Section 9.4(c) if and to the extent the indemnifying party is prejudiced by
such omission.  In case any such action shall be brought against any indemnified
party and it shall notify the indemnifying  party of the  commencement  thereof,
the indemnifying party shall be entitled to participate in and, to the extent it
shall wish, to assume and undertake the defense thereof with counsel  reasonably
satisfactory to such indemnified  party, and, after notice from the indemnifying
party `to such indemnified  party of its ejection so to assume and undertake the
defense thereof,  the indemnifying party shall not be liable to such indemnified
party under this Section 9.4(c) for any legal expenses  subsequently incurred by
such  indemnified  party in  connection  with the  defense  thereof  other  than
reasonable  costs of  investigation  and of liaison  with  counsel so  selected;
provided.  however,  that, if the defendants in any such action include both the
indemnified  party and the  indemnifying  party and the indemnified  party shall
have reasonably  concluded that there may be reasonable defenses available to it
which are different  from or additional to those  available to the  indemnifying
party or if the interests of the indemnified  party  reasonably may be deemed to
conflict with the  interests of the  indemnifying  party or if the  indemnifying
party  shall not have  assumed or  undertaken  the  defense of such  action with
counsel reasonably satisfactory to such indemnified party. the indemnified party
shall have the right to select one  separate  counsel  and to assume  such legal
defenses and otherwise to  participate  in the defense of such action,  with the
expenses and fees of one such  separate  counsel and other  expenses  related to
such participation to be reimbursed by the indemnifying  party as incurred.  




     (d) In  order to  provide  for just  and  equitable  contribution  to joint
liability  under the  Securities Act in any case in which either (i) the Seller,
or any  controlling  person of the  Seller,  makes a claim  for  indemnification
pursuant to this Section 9.4 but it is judicially  determined (by the entry of a
final judgment or decree by a court of competent jurisdiction and the expiration
of time to  appeal  or the  denial  of the  last  right  of  appeal)  that  such
indemnification  may not be enforced in such case  notwithstanding the fact that
this section 9.4 provides for indemnification in such case, or (ii) contribution
under  the  Securities  Act  may be  required  on the  part  of  the  Seller  or
controlling  person of the seller in circumstances for which  indemnification is
provided  under this Section 9.4;  then,  and in each such case, the Company and
the  seller  will  contribute  to  the  aggregate  losses,  claims,  damages  or
liabilities  to which they may be subject  (after  contribution  from others) in
such proportion so that the Seller is responsible for the portion represented by
the percentage that the public  offering price of its securities  offered by the
registration  statement  bears to the public  offering  price of all  securities
offered by such registration  statement,  and the Company is responsible for the
remaining  portion;  provided,  however,  that, in any such case, (A) the seller
will not be required to contribute any amount in excess of the proceeds received
by such  Seller from the sale of all such  securities  offered by it pursuant to
such  registration  statement;  and (B) no person or entity guilty of fraudulent
misrepresentation  (within the meaning of Section 11(f) of the  Securities  Act)
will be entitled to contribution from any person or entity who was not guilty of
such fraudulent  misrepresentation.  

     10. REPLACEMENT OF WARRANT. On receipt of evidence reasonably  satisfactory
to the Company of the loss,  theft,  destruction  or  mutilation of this warrant
and, in the case of any such loss,  theft or  destruction  of this  warrant,  on
delivery of an indemnity agreement or security  reasonably  satisfactory in form
and amount to the Company or, in the case of any such  mutilation,  on surrender
and  cancellation  of this Warrant,  the Company at its expense will execute and
deliver, in lieu thereof, a new Warrant of like tenor.

     11. WARRANT AGENT. The Company may, by written notice to each Holder of the
Warrant,  appoint an agent  having an office in New York,  NY for the purpose of
issuing  Warrant  Stock (or Other  Securities)  upon  exercise  of this  Warrant
pursuant  to Section  1,  exchanging  this  Warrant  pursuant  to Section 8, and
replacing  this  Warrant  pursuant to Section 10, or any of the  foregoing,  and
thereafter any such issuance, exchange or replacement, as the case may be, shall
be made at such office by such agent.

     12. TRANSFER ON THE COMPANY BOOKS. Until this Warrant is transferred on the
books of the Company,  the Company may treat the registered Holder hereof as the
absolute  owner  hereof  for all  purposes,  notwithstanding  any  notice to the
contrary.

     13. NOTICES,  ETC. All notices and other communications from the Company to
the Holder shall be mailed by first class registered or certified mail,  postage
prepaid, at such address as may have been furnished td the Company in writing by
the Holder or, until the Holder  furnishes  to the Company an address,  then to,
and at the address of, the last Holder of this  Warrant who has so  furnished an
address to the Company. Notices shall be deemed given 48 hours after mailing.




     14. MISCELLANEOUS. This Warrant and any term hereof may be changed, waived,
discharged  or terminated  only by an instrument in writing  signed by the party
against which  enforcement of such change,  waiver,  discharge or termination is
sought.  This Warrant  shall be construed  and enforced in  accordance  with and
governed by the laws of New York.  The headings in this Warrant are for purposes
of  reference  only,  and shall not limit or  otherwise  affect any of the terms
hereof. The invalidity or unenforceability of any other provision.

         IN WITNESS WHEREOF, the Company has executed this Warrant under seal as
of the date first written above.

                                   MEDJET INC.



                                   By:/s/Eugene I. Gordon
                                      -----------------------------------------
                                      Name: Eugene I. Gordon
                                      Title: President-Technology Development
                                             and Chairman of the Board

Attest:




By:/s/Thomas M. Handschiegel
   ---------------------------------------
   Name: Thomas M. Handschiegel
   Title: Vice President-Finance and
          Human Resources and Secretary





                                                                       Exhibit A



                              FORM OF SUBSCRIPTION
                   (To be signed only on exercise of Warrant)

TO: MEDJET INC.

The undersigned,  the Holder of the within Warrant, hereby irrevocably elects to
exercise this Warrant for, and to purchase thereunder,  ______________ shares of
Warrant Stock of MEDJET INC. and herewith makes payment of  $___________________
therefor by [delivery of a check in such amount] [hereby instructing MEDJET INC.
to deduct from the enclosed  Warrant a number of shares of Warrant  Stock having
an aggregate Fair Market Value equal to $_________ as of the date hereof,  which
amount represents the Purchase Price for the shares for which the within Warrant
is hereby exercised,  and which is equal to ______ shares of Warrant Stock], and
requests  that the  certificates  for such  shares be issued in the name of, and
delivered to ___________________ whose address is______________________________.



Dated:



                                       _________________________________________
                                       (Signature must conform to name of Holder
                                        as specified on the face of the Warrant)



                                       _________________________________________
                                                       (Address)






                                                                       Exhibit B


                         FORM OF TRANSFEROR ENDORSEMENT
                   (To be signed only on transfer of Warrant)


     For value received.  the undersigned hereby sells,  assigns,  and transfers
unto the  person(s)  named  below  under  the  heading  "Transferees"  the right
represented  by the within  Warrant to  purchase  the  percentage  and number of
shares of  Warrant  Stock of Medjet  Inc.  to which the within  Warrant  relates
specified under the headings "Percentage  Transferred" and "Number Transferred,"
respectively,  opposite the name(s) of such  person(s)  and  appoints  each such
person  Attorney to transfer  its  respective  right on the books of Medjet Inc.
with full power of substitution in the premises.

                                                                         

- --------------------------------------- -------------------------------------- --------------------------------------
                                                     PERCENTAGE                               NUMBER
             TRANSFEREES                             TRANSFERRED                            TRANSFERRED
- --------------------------------------- -------------------------------------- --------------------------------------
- --------------------------------------- -------------------------------------- --------------------------------------

- --------------------------------------- -------------------------------------- --------------------------------------
- --------------------------------------- -------------------------------------- --------------------------------------

- --------------------------------------- -------------------------------------- --------------------------------------
- --------------------------------------- -------------------------------------- --------------------------------------

- --------------------------------------- -------------------------------------- --------------------------------------
- --------------------------------------- -------------------------------------- --------------------------------------

- --------------------------------------- -------------------------------------- --------------------------------------
- --------------------------------------- -------------------------------------- --------------------------------------

- --------------------------------------- -------------------------------------- --------------------------------------





Dated: _____________________________, 19__   ___________________________________
                                             (Signature must conform to name
                                             of Holder as specified on the face
                                             of the Warrant)
Signed in the presence of:



_____________________________________      _____________________________________
(Name)                                     (Address)




_____________________________________      _____________________________________