A U.S. Marine with Charlie Company, 1st Battalion, 8th Marine Regiment, 2nd Marine Division (MARDIV), fires on an enemy compound in a mechanized assault during Integrated Training Exercise 1-16 aboard Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Oct. 27, 2015. Marines participate in a month-long field exercise demonstrating core mission essential tasks by conducting offensive, defensive and stability operations using combined arms, air integration, and battalion-level infantry tactics in order to strengthen operational readiness as they prepare for world-wide deployment. (U.S. Marine Corps photo by Cpl. Kelly L. Street, 2D MARDIV COMCAM/Released)