Whenever within the United States, its territories, and possessions, or outside the territorial limits of the United States, an individual is captured or otherwise comes into the custody or under the effective control of the United States who is suspected of engaging in hostilities against the United States or its coalition partners through an act of terrorism, or by other means in violation of the laws of war, or of purposely and materially supporting such hostilities, and who may be an unprivileged enemy belligerent, the individual shall be placed in military custody for purposes of initial interrogation and determination of status in accordance with the provisions of this Act