Senior Airman Richard McComb, 28th Maintenance Squadron aircraft structural maintenance journeyman, trims a titanium over wing fairing hydroline in the air structural maintenance building at Ellsworth Air Force Base, S.D., July 26, 2012. The over wing fairing hydroline assists the number two system pressure hydroline on the B-1 bomber, which is essential to safe and correct operation. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)