Aviation Structural Mechanic (Hydraulics) Second Class Thomas Phillips tightens rivets on a stabilizer of an F/A-18 Hornet from Strike Fighter Squadron Thirty-Seven (VFA-37), "Bulls", in the hangar bay aboard USS Harry S. Truman (CVN 75) as part of routine maintenance to the aircraft. TRUMAN is on station in the Arabian Gulf in support of Operation SOUTHERN WATCH (OSW). OSW is the mission that enforces the coalition imposed southern "no-fly zone" over Iraq