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Tech. Sgt. Glenn Lesher performs preflight launch checks on F/A-22 Raptor #99-4011. The "OT" on the tail designates the Raptor as an operational test vehicle. An April 29 mission tested two Raptors for the first time in the sky over Edwards. Sergeant Lesher is a 31st Test and Evaluation Squadron crew chief. [USAF photo by Derk Blanset]