Quartermaster 3rd Class Joseph White helps his team set a security perimeter around a target during a simulated fire fight at Fort Knox, Ky.

FORT KNOX, Ky. (Mar. 28, 2010) Quartermaster 3rd Class Joseph White, assigned to the Riverine Security Team of Riverine Squadron (RIVRON) 1, helps his team set a security perimeter around a target during a simulated fire fight at Fort Knox, Ky. RIVRON-1 participated in a three-day field exercise to prepare for an upcoming deployment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Bryan Weyers) File# 100328-N-4153W-054