Senior Airman Chris Lee communicates with the flight crew of a B-1B Lancer aircraft. U.S. Air Force Senior Airman Chris Lee, a crew chief with the 28th Maintenance Squadron, communicates with the flight crew of a B-1B Lancer aircraft at Ellsworth Air Force Base, S.D., on April 17, 2009. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 875471-Z-PDU23-913.jpg Photo Gallery