U.S. Army Staff Sgt. Hector Hoyas waves off a Nevada Army National Guard CH-47 Chinook helicopter while Air Force airmen secure the mirrors of a Humvee during sling-load training on Nellis Air Force Base, Nev., April 15, 2011. Hoyas is an aerial delivery field service department instructor assigned to Fort Lee, Va. U.S. Army Staff Sgt. Hector Hoyas waves off a Nevada Army National Guard CH-47 Chinook helicopter while Air Force airmen secure the mirrors of a Humvee during sling-load training on Nellis Air Force Base, Nev., April 15, 2011. Hoyas is an aerial delivery field service department instructor assigned to Fort Lee, Va. SHARE: Download: Full Size (1.89 MB) Tags: photo essays Credit: VIRIN: 135350-Z-IED34-329.jpg Photo Gallery