Limited Power of Attorney
For reporting under the Securities Exchange Act of 1934, as amended

	The undersigned hereby constitutes and appoints Dennis Powers, signing
singly, the undersigned?s true and lawful attorney-in-fact to:

(1)	Prepare and execute for and on behalf of the undersigned any Schedule
13G as shall from time to time be required pursuant to the Securities Exchange
Act of 1934, as amended, and the rules thereunder applicable to the
beneficial ownership of securities directly or indirectly attributable
to the undersigned;

(2)	Do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any
such Schedule 13G, complete and execute any amendment or amendments
thereto, and timely file any such form with the United States Securities
and Exchange Commission and any stock exchange or similar authority,
including completing and executing a Uniform Application for Access
Codes to File on Edgar on Form ID; and

(3)	Take any other action of any type whatsoever in connection with
the foregoing, which, in the opinion of such attorney-in-fact, may be
of benefit to, in the best interest of, or legally required by, the
undersigned, it being understood that the documents executed
by such attorney-in-fact on behalf of the undersigned pursuant
to this Power of Attorney shall be in such form and shall contain
such terms and conditions as such attorney-in-fact may approve in
such attorney-in-fact?s discretion.

     The undersigned hereby grants to the attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present.
The undersigned acknowledges that the foregoing attorney-in-fact, in serving
in such capacity at the request of the undersigned, is not assuming, any of
the undersigned?s responsibilities to comply with the Securities Exchange
Act of 1934.

     This Power of Attorney shall remain in full force and effect until
     October 31, 2019 unless earlier revoked by the undersigned in writing.

     In Witness Whereof, the undersigned has caused this Power of Attorney
     to be executed as of this 12th day of October, 2017.

     							/s/ John L. Kemmerer, III
     							John L. Kemmerer, III