150513-N-KU391-211 U.S. 5TH FLEET AREA OF OPERATIONS – Sailors assigned to the Checkmates of Strike Fighter Attack Squadron 211 verify serial numbers on an M61A1 gun in the hangar bay aboard the aircraft carrier USS Theodore Roosevelt. Theodore Roosevelt is deployed in the U.S. 5th Fleet area of operations supporting Operation Inherent Resolve, strike operations in Iraq and Syria as directed, maritime security operations and theater security cooperation efforts in the region.