Sgt. Jansen Davis (right), a section chief with 3rd Platoon, Rocket Battery F, 2nd Battalion, 14th Marine Regiment, 4th Marine Division, Marine Forces Reserve, and Lance Cpl. Justin Minor (left), a gunner with 2/14, operate a High Mobility Artillery Rocket System during the unloading of a launch pod trainer and then loading M31 Guided Multiple Launch Rocket Systems munitions into the M142 HIMARS carrier, during Weapons and Tactics Instructor course 1-18 at Landing Zone Bull Attack, near the Chocolate Mountain Aerial Gunnery Range, California, Oct. 11, 2017. The Reserve Marines are participating in WTI 1-18 during their annual training to maintain proficiency and experience with the HIMARS, advancing their combat effectiveness and readiness for future exercises and deployments. (U.S. Marine Corps photo by Cpl. Dallas Johnson/Released)