Texas Army National Guard members Sergio Esquivel, left, and Ernest Barmore carry 81-year-old Ramona Bennett after she and other residents were rescued from their Pine Forest Village neighborhood due to high water from Hurricane Harvey, Aug. 29, 2017, in Houston. (Erich Schlegel/Getty Images)
A member of the Coast Guard looks for people to rescue during the aftermath of Hurricane Harvey on Aug. 29, 2017, in Houston. Hurricane Harvey has set what forecasters believe is a new rainfall record for the continental United States, officials said Tuesday. (Brendan Smialowski/AFP via Getty Images)
A Coast Guard helicopter hoists a wheel chair on board after lifting a person to safety from the area that was inundated with flooding from Hurricane Harvey on Aug. 28, 2017, in Houston. (Joe Raedle/Getty Images)
Coast Guard members from Marine Safety Unit Port Arthur, Texas, evacuate survivors, Aug. 29, 2017, in Cleveland, Texas.. (Lt. Dana Grady/Coast Guard)
Oregon Air National Guardsmen from the 125th Special Tactics Squadron pack food and equipment aboard a C-130 Hercules assigned to the 123rd Airlift Wing, Kentucky Air National Guard, as they prepare to leave the Portland Air National Guard Base, Ore., Aug. 29, 2017. (Master Sgt. John Hughel/Air National Guard)
Evacuees from Dickinson, Texas, board an airplane at Scholes International Airport on Aug. 28, 2017, in Galveston, Texas. Texas Air National Guard planes were taking these flood evacuees to other cities after they spent Sunday night at a Galveston shelter. (Yi-Chin Lee/Houston Chronicle via AP)
Texas Army National Guard members help down families that were rescued from their flooded Pine Forest Village neighborhood due to high water from Hurricane Harvey, Aug. 29, 2017, in Houston. (Erich Schlegel/Getty Images)
A Coast Guard rescue team evacuates people from a neighborhood inundated by floodwaters from Tropical Storm Harvey on Aug. 28, 2017, in Houston. (AP Photo/Charlie Riedel)
National Guard members help brace a rescuer as he lowers a resident from a vehicle late Monday night, Aug. 28, 2017, in Lake Charles, La., after flooding from Harvey's almost constant rain over the last two days overcame the city's drainage system, flooding several subdivisions and necessitating home rescues. (Rogelio V. Solis/AP)
Battle Group Poland U.S. Scout Platoon snipers and 1st Battalion, 15th Mechanized Brigade Polish snipers conduct a range near the Bemowo Piskie Training Area, Aug. 29, 2017. The unique, multinational battle group, comprised of U.S., U.K. and Romanian soldiers, serve with the Polish 15th Mechanized Brigade. (Sgt. Jimmy Golden/Army)
Marines from Detachment A, Marine Light Attack Helicopter Squadron 773, Marine Aircraft Group 49, 4th Marine Aircraft Wing, Marine Forces Reserve, prepare the Bell UH-1Y Venom in support of Hurricane Harvey relief efforts, Aug. 28, 2017, from Belle Chasse, La. (Lance Cpl. Melany Vasquez/Marine Corps)
Service members with the Japan Air Self-Defense Force (JASDF) 2nd Air Defense Missile Group, set up the AN/MPQ-65 radar set during Patriot Advanced Capability-3 (PAC-3) deployment training at Marine Corps Air Station Iwakuni, Japan, Aug. 29, 2017. (Cpl. Aaron Henson/AP)
A U.S. Air Force F-15C Eagle aircraft deployed to Keflavik Air Base, Iceland, with the 159th Expeditionary Fighter Squadron, as part of a Theater Security Package, takes off to conduct an air surveillance mission in support of NATO alliance commitments, Aug. 29, 2017. (Tech. Sgt. Staci Miller/AP)