STOCK  OPTION  AGREEMENT
                             (KENNETH W. LANGSTON)

     THIS  STOCK  OPTION  AGREEMENT (the "Agreement") is made as of the 19th day
of  August,  2010  by  and  between  the  person  whose signature appears on the
signature  page  hereof  under  the  caption  "Optionor" ("Optionor") and AvStar
                                                           --------
Aviation  Group,  Inc.,  a  Colorado  corporation  ("Optionee").
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     RECITALS:

     WHEREAS,  Optionor  received 6.3 million shares (the "Owned Shares") of the
common  stock  in  Optionee  ("Common  Stock")  in  connection  with  Optionee's
acquisition  of all of the outstanding shares in Twin Air Calypso Limited, Inc.,
a  Florida  corporation;  and

     WHEREAS,  Optionee  desires  Optionor  to  grant  in favor of Optionee, and
Optionor  is willing to grant in favor of Optionee, a stock option in all shares
of Common Stock owned by Optionor, whereby Optionee (at its option) may purchase
a  portion  of  the  such  shares  on the terms and conditions specified herein;

     AGREEMENT:

     NOW,  THEREFORE,  for  and  in  consideration  of  the mutual covenants and
agreements  herein  contained, $10.00, and other good and valuable consideration
(the  receipt,  adequacy and sufficiency of which Optionor hereby acknowledges),
each  of  Optionor  and  the  Optionee  hereby  agrees  as  follows:

     1.     DEFINITIONS.  For  purposes  of  this Agreement, the following terms
shall  have  the  respective  definitions  assigned  to  them immediately below:

"Purchasable  Shares"  shall  mean  the  difference  between the number of Owned
Shares,  minus  the  number  of  Retained  Shares.

"Retained  Shares"  shall  mean:

     *     2,573,550 shares of Common Stock (the "Maximum Number of Shares"), if
the  Market  Value  is  less  than  $0.17;  or
     *     a  number of shares of Common Stock equal to the quotient obtained by
dividing  $437,500,  by  the  Market  Value,  if the Market Value is equal to or
greater  than  $0.17  but  less  than  $2.00;  or
     *     218,750  shares  of Common Stock (the "Minimum Number of Shares"), if
the  Market  Value  is  equal  to  or  greater  than  $2.00.

"Market  Value"  per  share  of Common Stock shall mean the average of the daily
Closing  Price  for  the Common Stock for the 20 Trading Days before the date on
which Optionee gives written notice to the Optionor pursuant to Sections 6 and 9
of  this  Agreement  of  Optionee's  exercise  of the Option, as defined herein.

"Closing Price" on a given day shall mean the last sale price regular way or, in
case  no  such  reported  sales  take place on such day, the average of the last
reported  bid  and  ask  prices,  regular  way,  in either case on the principal
national  securities  exchange or the NASDAQ/National Market System on which the
shares  of Common Stock are admitted to trading or listed, or if not so admitted
or  listed,  the  mean  between the low bid and high asked prices as reported by
NASDAQ  or  other  similar  organization  if  NASDAQ is no longer reporting such
information,  or if NASDAQ or other similar organization does not so report such
information,  the  mean between the low bid and high asked prices as reported by
the Pink Sheets, or if none of the foregoing is applicable, then on the basis of
the  then  market value of the Common Stock as shall be reasonably determined by
the  Board  of  Directors  of  Optionee.

"Trading  Day"  shall  mean  a  day  on  which the principal national securities
exchange  on  which  shares of Common Stock are listed or admitted to trading is
open  for the transaction of business or, if the shares of such Common Stock are
not listed or admitted to trading on any national securities exchange, a Monday,
Tuesday,  Wednesday,  Thursday  or  Friday  on which banking institutions in the
Borough  of  Manhattan,  City  and  State  of  New  York,  are not authorized or
obligated  by  law  or  executive  order  to  close.

     2.     GRANT  OF  STOCK  OPTION.  For  $10.00,  and other good and valuable
consideration  (the  receipt,  adequacy and sufficiency of which Optionor hereby
acknowledges),  Optionor  hereby  grants  an  option  (the "Option") in favor of
Optionee,  under  the terms and conditions hereinafter specified, to acquire, at
any time or from time to time during the term of the Option set forth in Section
3  below,  the  number  of Purchasable Shares owned by Optionor as determined in
accordance  with  Section  1 above, free and clear of all encumbrances, security
interests, liens, charges, claims and restrictions on the transfer thereof.  The
shares  of Shares subject to the Option are referred to hereafter as the "Option
Shares."  Optionee shall have no right pursuant to this Agreement to acquire the
Retained  Shares,  which  Optionee  shall  be  entitled  to  retain.

     3.     TERM.  The  Option  shall  become  effective  on the date hereof and
shall  continue  for  one  year  thereafter.   If Optionor does not exercise the
Option  within  one year after the date hereof, then the Option shall expire and
become  null  and  void.

     4.     PURCHASE  PRICE.  The  aggregate purchase price of the Option Shares
shall  be  $612,500.

     5.     PAYMENT  OF PURCHASE PRICE.  The purchase price of the Option Shares
purchased  shall  be paid in its entirety in cash at the closing of the sale and
purchase  of  the  Option  Shares.

     6.     PROCEDURE  FOR  EXERCISE  OF  OPTION AND CLOSING.  The Option may be
exercised  at any time or from time to time during its term by Optionee's giving
written  notice  to  the Optionor pursuant to Section 9 of this Agreement.  Such
notice  shall specify a date, which shall not be less than fifteen (15) nor more
than  thirty  (30)  days after the date of such notice, as the date on which the
Option  Shares  in  their entirety will be taken up and payment made therefor in
cash,  certified  or bank cashier's check, or their equivalent.  In the event of
any  failure  to  pay for Option Shares on the date set forth in the notice, the
exercise  of  the  Option shall become void, but the Option shall remain in full
force  and  effect and may be exercised in full thereafter.  Upon payment of the
purchase  price  for  the  Option Shares, Optionor shall deliver the one or more
stock  certificates  representing  the  Option  Shares,  in  good  form and duly
endorsed  for  transfer  or  accompanied by a duly executed stock power.  In the
event  that  the  number  of  shares  represented  by  the  one  or  more  stock
certificates  delivered  by  Optionor pursuant to the preceding sentence exceeds
the  number  of  Option  Shares then being purchased by Optionee, Optionee shall
cause  one  or  more  other  stock certificates representing the residual Option
Shares  not  purchased  to  be  issued in the name of and delivered to Optionor.
Optionor  agrees  at  all times hereafter to execute any document or instrument,
and take any action, immediately upon Optionee's request, as Optionee may desire
in order to perfect in Optionee title to the Option Shares hereafter conveyed by
Optionor  to  Optionee  pursuant  to  any  exercise  of  the  Option.

     In  addition to the preceding, if Optionee completes a private placement of
the  securities  of  Optionee  for  an aggregate purchase price of at least $3.0
million,  then  Optionee  shall  immediately  exercise  the  Option.

     7.     ADJUSTMENTS.

     (a)     If  the outstanding shares of Common Stock shall be subdivided into
a  greater  number  of  shares of Common Stock or a dividend in shares of Common
Stock  shall  be  paid in respect of shares of Common Stock, the $0.17 and $2.00
figures  contained  in the definition of "Retained Shares" in Section 1 above or
any  adjusted  figures based on prior similar events in effect immediately prior
to  such subdivision or at the record date of such dividend shall simultaneously
with  the effectiveness of such subdivision or immediately after the record date
of  such  dividend  be  proportionately  reduced.  If  the outstanding shares of
Common  Stock shall be combined into a smaller number of shares of Common Stock,
the  $0.17 and $2.00 figures contained in the definition of "Retained Shares" in
Section  1 above or any adjusted figures based on prior similar events in effect
immediately  prior  to  such  combination  shall,  simultaneously  with  the
effectiveness  of  such  combination,  be  proportionately  increased.  When any
adjustment  is  required  to  be made in the $0.17 and $2.00 or related adjusted
figures, the Maximum Number of Shares and the Minimum Number of Shares contained
in  the  definition  of "Retained Shares" in Section 1 above shall be changed to
the  number  determined  by  dividing  (i) the figures in effect for the Maximum
Number  of  Shares  and  the  Minimum Number of Shares immediately prior to such
adjustment,  multiplied  by  the  related  $0.17  and  $2.00 or related adjusted
figures  in  effect  immediately  prior to such adjustment, by (ii) the adjusted
figures  in  effect  immediately  after  such  adjustment.

     (b)     If there shall occur any capital reorganization or reclassification
of the shares of Common Stock (other than a change in par value or a subdivision
or  combination  as  provided  for  in subsection (a) immediately above), or any
consolidation  or  merger  of the Company with or into another corporation, or a
transfer  of  all  or  substantially  all  of  the assets of the Company, or the
payment  of a liquidating distribution then, as part of any such reorganization,
reclassification,  consolidation,  merger,  sale  or  liquidating  distribution,
lawful  provision shall be made so that Optionee shall have the right thereafter
to  receive  upon the exercise hereof (to the extent, if any, still exercisable)
the  kind  and  amount  of shares of stock or other securities or property which
Optionee  would  have been entitled to receive if, immediately prior to any such
reorganization,  reclassification,  consolidation,  merger,  sale or liquidating
distribution,  as  the  case  may  be, Optionee had held the number of shares of
Common  Stock  which  were then purchasable upon the exercise of the Option.  In
any  such case, appropriate adjustment (as reasonably determined by the Board of
Directors of the Company) shall be made in the application of the provisions set
forth  herein  with  respect  to the rights and interests thereafter of Optionee
such  that the provisions set forth in this Section 7 (including provisions with
respect  to adjustment of the $0.17 and $2.00 or related adjusted figures) shall
thereafter be applicable, as nearly as is reasonably practicable, in relation to
any  shares of stock or other securities or property thereafter deliverable upon
the  exercise  of  the  Option.

     8.     BINDING  EFFECT  AND  PROHIBITION  OF  PLEDGE.  If any of the Option
Shares  are  transferred,  the Option Shares transferred shall remain subject to
the  Option,  which  may  be  exercised  with  respect  to such Option Shares in
accordance  with the provisions hereof.  Optionor hereby agrees that, so long as
the  Option is in effect, Optionor will not pledge any of the Option Shares, and
that  any  purported  pledge  shall  be  null  and  void.

     9.     NOTICES.  All  notices,  requests,  demands and other communications
hereunder  shall  be  in  writing  and  shall  be  deemed  to have been given if
personally  delivered  or  mailed,  registered  or  certified,  return  receipt
requested,  with  postage  prepaid,  five  (5)  days after deposit in the United
States  mail addressed to the appropriate party at the address set forth beneath
such  party's  name below or to such other address for notice as any party shall
hereafter  notify  the  other  parties  in  writing,  from  time  to  time.

     10.     LEGEND.  All  certificates  representing the Option Shares shall be
endorsed  on  the  back  thereof  substan-tially  as  follows:

     CERTAIN  OF  THE  SHARES REPRESENTED BY THIS CERTIFICATE ARE SUB-JECT TO AN
OPTION  IN FAVOR OF AVSTAR AVIATION GROUP, INC., A COLORADO CORPORATION, GRANTED
PURSUANT  TO  A  STOCK  OPTION  AGREEMENT.

     Such  certificates  may  be  endorsed  on  the  front  there-of as follows:

     SEE  RESTRICTIONS  ON  TRANSFER  HEREOF  ON  REVERSE  SIDE.

     11.     SPECIFIC PERFORMANCE.  Optionor hereby acknowledges that the Option
Shares  are  unique  personal property, and that if the Optionor fails to tender
the  Option  Shares  pursuant  to  a  proper  exercise of the Option, a court of
competent  jurisdiction shall be entitled to enforce specifically this Agreement
and  to  require  Optionor  to  tender  the  Option  Shares  as required hereby.

     12.     ATTORNEYS  FEE.  The  party  prevailing  in  any lawsuit brought by
either  party  with  respect to this Agreement shall be entitled to recover from
the  losing  party  all  reasonable  attorney  fees  and  costs  incurred by the
prevailing  party.

     13.     COMPLETE  AGREEMENT  AND  AMENDMENTS.  This  Agreement contains the
complete  agreement  between  the  parties  and  supersedes  all  other prior or
contemporaneous  agreements  or  understanding, written or oral.  This Agreement
may not be amended or modified otherwise than through a written amendment signed
by  both  parties.

     IN WITNESS WHEREOF, the undersigned have set their hands hereunto as of the
date  first  above  written.

"OPTIONOR"                              "OPTIONEE"

                                         AVSTAR  AVIATION  GROUP,  INC.,
                                         a  Colorado  corporation
_____________________________________
     Kenneth  W.  Langston
                                         By:__________________________________

Address:     ________________________    Name:________________________________

          ________________________       Title:  _____________________________
                                         Address:     3600  Gessner,  Suite  220
                                                      Houston,  Texas  77063