The Mediterranean Sea (Mar. 21, 2003) -- 2,000-lb. Joint Directional Attack Munitions (JDAMs) are loaded onto one of four aircraft elevators for transport to the ship's flight deck aboard USS Harry S. Truman (CVN 75). JDAMs are guidance kits that convert existing unguided bombs into precision-guided "smart" munitions. The tail section contains an inertial navigational system (INS) and a global positioning system (GPS). A JDAM improves the accuracy of unguided bombs in any weather condition. Truman is currently deployed and is conducting missions in support of Operation Iraqi Freedom.