14 C.F.R. § 1214.702 – Authority and responsibility of the NASA Commander.

(a) During all flight phases, the NASA Commander shall have the absolute authority to take whatever action is in his/her discretion necessary to:
1. (1) Enhance order and discipline.
2. (2) Provide for the safety and well-being of all personnel on board.
3. (3) Provide for the protection of the spacecraft and payloads.
  The NASA Commander shall have authority, throughout the mission, to use any reasonable and necessary means, including the use of physical force, to achieve this end.
(b) The authority of the NASA Commander extends to any and all personnel on board the spacecraft including Federal officers and employees and all other persons whether or not they are U.S. nationals.
(c) The authority of the NASA Commander extends to all spaceflight elements, payloads, and activities originating with or defined to be a part of the NASA mission.
(d) The NASA Commander may, when he/she deems such action to be necessary for the safety of the spacecraft and personnel on board, subject any of the personnel on board to such restraint as the circumstances require until such time as delivery of such individual or individuals to the proper authorities is possible.