ARLINGTON, Va. -- ATK announced Sunday that its CASTOR 30 upper stage solid rocket motor supported the successful test flight of Orbital Sciences Corporation's Antares launch vehicle with the Cygnus mass simulator payload. The test flight took place at NASA's Wallops Flight Facility in Virginia on Sunday."This is a great day for the Antares team," said Scott Lehr, vice president and general manager of ATK's Defense and Commercial Division, in a news release."We congratulate Orbital for a successful test flight (Sunday). ATK is proud to be a part of their Antares team," Lehr said, adding that ATK is looking forward to helping Orbital carry out its first cargo resupply mission to the International Space Station later this year.