(PRNewswire) ATK (Alliant Techsystems), Minneapolis, Minn., has agreed to acquire two hypersonic flight businesses--GASL and Micro Craft--from Allied Aerospace. The strategic transaction adds to ATK's portfolio of propulsion and airframe technologies for aerospace and defense applications. GASL and Micro Craft develop hypervelocity and air-breathing systems for next-generation space vehicles, missiles, and projectiles. GASL and Micro Craft employ approximately 170 people at facilities in Ronkonkoma, N.Y. and Tullahoma, Tenn. Terms of the transaction, which closed Nov. 20, were not disclosed.