TOPSHOT - People view the flooded highways in Houston on August 27, 2017 as the city battles with tropical storm Harvey and resulting floods. - Massive flooding unleashed by deadly monster storm Harvey left Houston -- the fourth-largest city in the United States -- increasingly isolated Sunday as its airports and highways shut down and residents fled homes waist-deep in water. (Photo by Thomas SHEA / AFP) (Photo by THOMAS SHEA/AFP via Getty Images)