R.I. Gen. Laws § 30-12-5: Arrest of trespassers and persons interfering with functions of militia.

The commanding officer, upon any occasion of duty, may place in arrest, during the continuance thereof, any person who shall trespass upon a camp or parade ground, armory, arsenal, rifle range, or any other place devoted to or used for militia purposes; who shall in any way or manner interrupt, molest or disturb the orderly discharge of militia duty; or who shall disturb or prevent the passage of troops going to, or returning from, any duty. That person shall also be guilty of a misdemeanor.