The Space Development Agency will issue a request for proposals next week on its first set of Tranche 2 satellites for its Proliferated Warfighter Space Architecture, according to SDA Director Derek Tournear. The T2 transport layer will include three sets of launches -- Beta, Alpha and Gamma, in that order, Tournear said Wednesday at the Mitchell Institute Spacepower Security Forum. SDA plans to award three contracts for the 72 Beta satellites, two contracts for the 100 Alpha satellites and two...