If you search the US Code on-line, you will find that the Posse Comitatus Act as amended now applies to all branches of the US Armed Forces except the Coast Guard. Here it is copied verbatim:

TITLE 10, Subtitle A, PART I, CHAPTER 18, Sec. 375.

Sec. 375. - Restriction on direct participation by military personnel

The Secretary of Defense shall prescribe such regulations as may be necessary to ensure that any activity (including the provision of any equipment or facility or the assignment or detail of any personnel) under this chapter does not include or permit direct participation by a member of the Army, Navy, Air Force, or Marine Corps in a search, seizure, arrest, or other similar activity unless participation in such activity by such member is otherwise authorized by law.


Click here for US Code!