In a 19 November 1996 demonstration, a Stinger (ATAS) Block-1 missile was launched from an OH-58D at the Yuma Proving Ground and successfully destroyed a QUH-1 drone helicopter deploying countermeasures at a range greater than 2.8 miles (4,500 m).Block II will incorporate various improvements including a new staring IR focal plane array seeker, a new battery, and advanced signal processing capabilities.ATAL is an upgrade to the Air-to-Air Stinger launcher fielded on the OH-58D Kiowa Warrior and Blackhawk helicopters.Nine missiles were fired, eight of which scored direct hits against simulated hovering helicopter targets in a clutter environment.The missiles were launched with the Longbow helicopter traveling at speeds from hovering to 136 knots (157 mph; 252 km/h), side slips up to 30 knots (35 mph; 56 km/h), partial power descents, pull-up maneuvers, hovering pedal turns, push-over maneuvers, and a 22-degree bank.