Through the C-17 Globemaster III Sustainment Partnership, Boeing performed total system support responsibility for C-17 aircraft, including materiel management and depot maintenance at company facilities in Long Beach, CA, and San Antonio, Texas. Boeing's C-17 sustainment efforts have proven to be an overwhelming success. In March 2006, the fleet of C-17 Globemaster III airlifters reached one million flying hours -- the equivalent of one of the advanced cargo jets flying every minute of every day continuously for more than 114 years. The flight hour milestone came significantly sooner than Air Force or Boeing planners anticipated. Officials at the Tanker Airlift Control Center, the Air Force's nerve center for global airlift operations, confirmed that C-17s have been pressed much harder since Sept. 11, 2001, than originally planned.