The U.S. Department of Defense awarded a $10.4 billion, five-year procurement contract for 167 V-22 Osprey tilt-rotor aircraft to a strategic alliance between Bell Helicopter and The Boeing Co. The contract calls for 141 MV-22 aircraft for the U.S. Marine Corps and 26 CV-22 aircraft for the Air Force Special Operations Command. To date, the Bell Boeing alliance has delivered a total of 100 V-22 aircraft to the U.S. military. The Marines currently have 12 MV-22s deployed in combat at Al Asad Air Base in Iraq. The V-22 combines the vertical performance of a helicopter with the high speed and range of a fixed-wing aircraft.