The Crew of a Cargo Ship Traveling in US Waters

The crew of a cargo ship traveling in US waters successfully revolts against the captain, claiming he has not done enough to make the ship safe. The cargo ship is then attacked and boarded by a vessel which does not fly any nation's flag.

A) What federal act forbids the use of federal military forces to enforce civilian laws unless there is other constitutional or congressional authorization?
B) Martial Law
C) Military Law
D) Posse Comitatus
E) Martial Jurisdiction