Uncle Sam wants AST to help build it a missile defense system.Direct-to-cell satellite communications provider AST SpaceMobile (ASTS) ran up 16% through 10:05 a.m. ET Thursday after announcing, last night after close of trading, that the U.S. Space Development Agency (SDA, an arm of the Space Force) has chosen AST to participate in its new Hybrid Acquisition for Proliferated Low Earth Orbit (HALO) program.What this means for AST SpaceMobileThe initial award value is reported to be small -- just $20,000, acc ...