Do international students have to be full-time in summer? Full-time enrollment is required for international students with an I-20 (F-1) with a summer start date. It must be maintained during the entire period noted on the I-20. More details: Summer Enrollment Requirements.
Military police officers are members of the U.S. Armed Forces whose main duties include law enforcement, security, crime investigation, safety and related work. Each branch of the U.S. military has military police officers assigned to bases, ships and aircraft.
This is a complex question. Military police are law enforcement officers employed by the Federal government. So technically, they are Federal Law Enforcement Officers. I think the information you may be looking for is what are military police authorized, or not authorized to do in that capacity. Military police officers typically do not have the legal authority to conduct law enforcement activities outside of the jurisdiction of a military base.