TWENTYNINE PALMS, Calif. – Stan Jenkins, chief instructor for battle simulations, explains how to properly evacuate the Mine-Resistant Ambush Protected Egress Trainer for Marines with Company F, 4th Tank Battalion, 4th Marine Division at the Marine Corps Air Ground Combat Center here June 21. The MRAP egress trainer is used to simulate a vehicle rollover and Marines must evacuate the vehicle quickly and safely. The trainer is part of Integrated Training Exercise 4-13, a cornerstone of the Marine Air Ground Task Force Training Program. It is the largest annual U.S. Marine Corps Reserve training exercise; helping establish best practices, refine planning guidance and baseline requirements for future Reserve units. ITX 4-13, utilizing assets from Ground, Air and Logistic Combat Elements in a live and virtual constructive battalion exercise. (U.S. Marine Corps photo by Cpl. John M. McCall)