U.S. Marine Corps Staff Sgt. Jesse Curtis and Antonio Flores, both rail instructors from Marine Corps Logistics Base Barstow, demonstrate tie-down procedures to students at Joint Base Langley-Eustis, Virginia, April 11, 2021. The instructors sought to enhance their students’ knowledge of rail load-out, rail safety, tie-downs and movement planning. (U.S. Air Force photo by Staff Sgt. Joshua Magbanua)