Withstanding the pressure
U.S. Air Force Senior Airman Tyler Gann, 7th Equipment Maintenance Squadron aircraft structural maintenance, selects a piece of tubing March 26, 2014, at Dyess Air Force Base, Texas. Different tube sizes and types are used for different applications on the B-1B Lancer. Titanium, for example, is used for hydraulic pressure lines. Each tube must be cut and shaped perfectly, to ensure proper fit. (U.S. Air Force photo by Senior Airman Kia Atkins/Released)