Technical Sgt. Samuel Djonorh, Staff Sgt. William Johnson and Airman 1st Class Amber Burns are Nondestructive Inspection Airmen deployed to the 379th Expeditionary Maintenance Squadron at Al Udeid Air Base, Qatar. NDI Airmen inspect for cracks and flaws on aircraft and their components, aerospace ground equipment and safety equipment. They also test jet engine oil samples, using a variety of methods, like magnetic particle, fluorescent penetrant, eddy current, radiography, optical and ultrasonic equipment. (U.S. Air Force photo/Staff Sgt. Alexandre Montes)