US Marine Corps (USMC) Sergeant (SGT) Mark Thompson role-plays a perpetrator who has taken hostages and holds them prisoner inside an abandoned building at Camp Kinser, Marine Corps Base (MCB) Camp Smedley D. Butler, Okinawa, Japan, during a simulated hostage rescue situation conducted as part of a Force Protection Exercise (FPEX). The FPEX is a base wide exercise designed to test and improve base security throughout MCB Camp Smedley D. Butler between March 29 and April 1, 2004