Greg Poe pulls back on the joystick of his ethanol powered aircraft in preparation for an acrobatic maneuver, Wednesday, May 18, 2011, in Manassas, Va. Poe will be preforming at the Joint Service Open House and Air Show at Andrews Air force Base, which will also feature the Thunderbirds, the Golden Knights, and other aerial and ground attractions. (Greg Poe/Special to The Washington Times)
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