President Trump's whirlwind visit to Puerto Rico on Tuesday resulted in gaffes such as Trump telling a homeowner without electricity to "have a good time" and pretending to shoot hoops with paper towel rolls. Perhaps most of all, Trump was baffled by aid work in the U.S. territory. "Flashlights. You don't need 'em anymore," he told a crowd in a chapel, despite the fact that 95 percent of the island is still without power. He was particularly bewildered by water purification techniques, which are essential to islanders' survival due to the fact that many parts of Puerto Rico remain without drinkable water.