An M1A1 Abrams main battle tank fires during a battle sight zero at Range 500 during Integrated Training Exercise 4-19 at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., June 9, 2019. The ITX force includes each of the Marine Air-Ground Task Force’s subordinate elements who work together in the application of combined-arms maneuver warfare during the exercise. (U.S. Marine Corps photo by Lance Cpl. Preston L. Morris)