Continued From Previous Page The B-52 also played a role in Operation Iraqi Freedom. On March 21, 2003, B- 52Hs launched approximately 100 CALCMs during a night mission.   Only the H model is still in the Air Force inventory and is assigned to the 5th Bomb Wing at Minot AFB, N.D. and the 2nd Bomb Wing at Barksdale AFB, La., which fall under Air Force Global Strike Command. The aircraft is also assigned to the Air Force Reserve Command's 307th Bomb Wing at Barksdale. General Characteristics Primary Function: Heavy bomber Contractor: Boeing Military Airplane Co. Power plant: Eight Pratt & Whitney engines TF33-P-3/103 turbofan Thrust: Each engine up to 17,000 pounds Wingspan: 185 feet (56.4 meters) Length: 159 feet, 4 inches (48.5 meters) Height: 40 feet, 8 inches (12.4 meters) Weight: Approximately 185,000 pounds (83,250 kilograms) Maximum Takeoff Weight: 488,000 pounds (219,600 kilograms) Fuel Capacity: 312,197 pounds  (141,610 kilograms) Payload: 70,000 pounds (31,500 kilograms) Speed: 650 miles per hour (Mach 0.86) Range: 8,800 miles (7,652 nautical miles) Ceiling: 50,000 feet (15,151.5 meters) Armament: Approximately 70,000 pounds (31,500 kilograms) mixed ordnance -- bombs, mines and missiles. (Modified to carry air-launched cruise missiles) Crew: Five (aircraft commander, pilot, radar navigator, navigator and electronic warfare officer Unit Cost: $53.4 million (fiscal 98 constant dollars) Initial operating capability: April 1952 Inventory: Active force, 85; ANG, 0; Reserve, 9