Security Perimeter Marines establish a security perimeter around a simulated aircraft crash site during Exercise Hamel at Cultana Training Area, Australia, July 1, 2016. Marine Corps photo by Cpl. Carlos Cruz Jr. SHARE: Download: Full Size (2.31 MB) Tags: Exercises, MARINE CORPS, MARINES Credit: Cpl. Carlos Cruz Jr. VIRIN: 160701-M-KE800-096A.JPG Photo Gallery