President Donald Trump addresses the nation after a deadly plane crash that killed everyone on board. The passenger plane and a military UH-60 "Blackhawk" helicopter crashed over the Potomac near Ronald Reagan National Airport. President Trump promised swift answers to the families of the victims and said the U.S. was working to return the bodies of Russian nationals who died in the crash, despite strained relations with Moscow. MORE: https://www.wthr.com/article/news/nation-world/aircraft-down-washington-dc-potomac-river/507-415bed11-7043-4fa0-ab80-e24084f60665