Reserve Marines with 23rd Marine Regiment, 4th Marine

Reserve Marines with 23rd Marine Regiment, 4th Marine Division, discuss possible defensive and offensive tactics for an air assault course, during Integrated Training Exercise 4-18, aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., June 15, 2018. ITX 4-18 provides Marine Air-Ground Task Force elements an opportunity to undergo service-level competency assessments so that they can seamlessly integrate with active duty Marines, into a Marine Air Ground Task Force, in the event of a crises that requires a rapid response. (U.S. Marine Corps photo by Cpl. Dallas Johnson/Released)