U.S. Marines with Golf Company, 2nd Battalion, 25th Marines, 4th Marine Division, Marine Forces Reserve, push through the inital breach on range 400 as part of Integrated Training Exercise 4-17 at Camp Wilson, Twentynine Palms, California on June 18, 2017. ITX 4-17 is a live-fire and maneuver combined arms exercise designed to train battalion and squadron-sized units in the tactics, techniques, and procedures required to provide a sustainable and ready operational reserve for employment across the full spectrum of crisis and global engagement.