LANGLEY AIR FORCE BASE, Va. – Maj. Marcus Green, Air Combat Command A4 B-2 Weapons Load Team chief, explains principles of flight to his son Caleb, 11, at the Langley Aero Club 2010 Open House April 24. Guests enjoyed free food, demonstrations and orientation flights during the biannual event. (U.S. Air Force photo/Airman Rebecca Montez)