Senior Airman Jonathan Mirro conducts an inspection of a B-1B Lancer aircraft engine. U.S. Air Force Senior Airman Jonathan Mirro conducts an inspection on the inside of a B-1B Lancer aircraft engine during a phase 1 operational readiness exercise at Ellsworth Air Force Base, S.D., on July 12, 2007. Mirro is assigned as a crew chief for the 28th Aircraft Maintenance Squadron. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 633728-T-ZAU78-921.jpg Photo Gallery