Airman 1st Class Rolando Echavarria, 509th Maintenance Squadron non-destructive inspection technician, begins a pre-evaluation on an aircraft part checking for discrepancies at Whiteman Air Force Base, Mo., May 8, 2014. The NDI shop uses a variety of methods to inspect the aircraft including x-rays, ultra-sonics, fluorescent penetration and infrared thermography (U.S. Air Force photo by Senior Airman Bryan Crane)