KULIS AIR NATIONAL GUARD BASE, Alaska - Senior Airman David Eggleston, an aircraft fuels technician, from the 176th Maintenance Squadron exits a training, C-130 integral fuel tank Sept. 19, 2010. The technicians work in two-member teams with one person inside the tank and another on the outside to hand and trade tools and to provide safety back-up for the person on the inside. During an eight-hour day, technician can work up to four hours inside the tank and it can take a week's worth of time to complete a repair. Alaska Air National Guard photo by Master Sgt. Shannon Oleson.