Out on the prairie — "For our base design, we're designing around return to launch site propulsive landing." Enlarge / A test version of Firefly's Miranda engine fires up on a test stand in Briggs, Texas.Firefly Aerospace BRIGGS, Texas—The new medium-lift rocket under development by Firefly Aerospace and Northrop Grumman will eventually incorporate a recoverable booster that will return to its launch site in Virginia for reuse. Firefly has previously suggested rocket reuse is on the roadmap f...