'UNVEILING DRILL' Air Force Honor Guard Drill Team members perform their new "four-corners" drill sequence, which represents the global reach of the Air Force, at Union Station in Washington, D.C. Feb. 21, 2008. The "unveiling drill" is the first drill of the year and the formal presentation of the 2008 team. SHARE IMAGE: Download Image: Full Size (0.08 MB) Photo By: VIRIN: 796062-O-VRF41-607.jpg Photo Gallery