DULLES, Va.--(BUSINESS WIRE)--Orbital ATK, Inc. (NYSE: OA), a global leader in aerospace and defense technologies, provided critical hardware for today’s United Launch Alliance Atlas V launch from Cape Canaveral Air Force Station, Florida. The company contributed products on the fourth satellite in the U.S. Navy's Mobile User Objective System (MUOS), designated MUOS-4, and the United Launch Alliance (ULA) Atlas V launch vehicle. MUOS is the next generation in narrowband tactical satellite commu