Marines with 4th Reconnaissance Battalion, 4th Marine Division, Marine Forces Reserve, participate in rescue operations in response to Hurricane Harvey in Katy, Texas, Aug. 30, 2017. Marine Forces Reserve is posturing ground, air and logistical assets in order to support FEMA, state and local response efforts due to Hurricane Harvey. The Marine Corps Reserve is America’s expeditionary total force in readiness whether on the battlefield or during national emergencies.