Patriot Starter Set The Patriot dominates the skies! This classic scale-like model rocket is built ready-to-fly and looks like the genuine surface-air defense missile used by the U.S. Army. Length: 18.0 in. (46 cm) Diameter: 1.35 in. (34.3 mm) Weight: 2.7 oz. (75 g) Recovery: 12 in. (30 cm) Parachute Fins: Plastic molded Maximum Altitude: 600 ft. (183 m) Recommended Engines: A8-3, B4-4, B6-4, C6-5 Notes: Includes two engines. Minor assembly required. Includes complete launch system and flight supplies for your first two missions. Requires 4 AA alkaline batteries not included.