U.S. Marines with Headquarters Battalion, 2nd Marine Division, set up a combat operations center during Tent Exercise 1-19 on Camp Lejeune, N.C., Feb. 4-15, 2019. The two-week-long exercise tested 2nd Marine Division's ability to rapidly break down and re-establish a combat operations center in a field environment, which is essential to the effectiveness and survivability of the command element. (U.S. Marine Corps photo by Cpl. Liah A. Smuin) - U.S. Marines with Headquarters Battalion, 2nd Marine Division, set up a combat operations center during Tent Exercise 1-19 on Camp Lejeune, N.C., Feb. 4-15, 2019. The two-week-long exercise tested 2nd Marine Division's ability to rapidly break down and re-establish a combat operations center in a field environment, which is essential to the effectiveness and survivability of the command element. (U.S. Marine Corps photo by Cpl. Liah A. Smuin)