US Marine Corps (USMC) Lance Corporal (LCPL) Arthur Puente, Headquarters (HQ) Platoon (PLT), Golf Company (G Co.) 2nd Battalion (BN), 7th Marine Regiment, 1ST Marine Division (MARDIV), uses a Rockwell Collins PLGR (Precision Lightweight GPS Receiver) AN/PSN-11 global positioning system to acquire a grid reading while rehearsing riverine operations and participating in a Security and Stabilization Operation (SASO) in Al Anbar Province, Iraq, conducted during Operation IRAQI FREEDOM