Marines with 1st Battalion, 24th Marine Regiment, move down a road while the street is covered by an M1A1 Abrams tank during an assault on a simulated enemy town Aug. 17, 2014, aboard Camp Lejeune, N.C., during exercise Heavy Metal 14. As the assault continued, instructors and safety personnel would point out a Marine to play the role of a wounded casualty to assess the team’s casualty evacuation performance.