KATY, Texas – Marine Corps Sgt. Sean Hennessey, a water survival instructor with Charlie Company, 4th Reconnaissance Battalion, 4th Marine Division, Marine Forces Reserve, ties chemical lights to a U.S. Marine Corps F470 Zodiacs Combat Rubber Raiding craft at Katy High School in Katy, Texas, Aug. 30, 2017. Marines from Charlie Company supported rescue missions in wake of Hurricane Harvey, which flooded much of the surrounding region displacing 30,000 people, and flooding thousands of homes. (U.S. Marine Corps photo by Lance Cpl. Niles Lee/Released)