Aircraft structural maintenance Airman keeps aircraft safe Air Force Airman 1st Class Lukas Johnson, an aircraft structural maintenance technician with the 3rd Aircraft Maintenance Squadron at Joint Base Elmendorf-Richardson, Alaska, works with a C-130 Hercules leading-edge training aid April 20, 2017. The Phoenix native works to prevent aircraft corrosion, which can compromise an aircraft's structure. Air Force photo by David Bedard SHARE: Download: Full Size (1.2 MB) Tags: aircraft structural maintenance, 3rd Maintenance Squadron, 3rd wing Credit: David Bedard VIRIN: 170420-F-ZY202-0002.JPG Photo Gallery