Defense giant Raytheon, a division of RTX Corporation, is developing a ground-launched variant of its GBU-53/B Small Diameter Bomb II, the precision-guided, long-range munition known as StormBreaker.

TUCSON, Ariz., April 7, 2025 /PRNewswire/ -- Raytheon, an RTX (NYSE: RTX) business, has awarded contracts to Nammo and Northrop Grumman for initial phase work on MK72 solid rocket motor development.