R.I. Gen. Laws § 12-7-18
A National Guard member of the rank of sergeant or higher who is on emergency state duty pursuant to the call of the governor may detain any person abroad who he or she has reason to suspect is committing, has committed, or is about to commit a crime, and may demand of the person his or her name, address, business abroad, and destination; and any person who fails to identify himself or herself and explain his or her actions to the satisfaction of the national guard member may be further detained and further questioned and investigated by the peace officer; provided, in no case shall the total period of the detention exceed two (2) hours, and the detention shall not be recorded as an arrest in any official record. At the end of the detention period the person so detained shall be released unless arrested and charged with a crime.
R.I. Gen. Laws § 12-7-18