The man charged with trying to storm the White House Correspondents’ Association dinner and kill US President Donald Trump took a picture of himself in his hotel room just minutes earlier, outfitted with an ammunition bag, a shoulder gun holster and a sheathed knife, authorities said on Wednesday in a new court filing.Cole Allen wore black pants, a black shirt and a red tie as he snapped the image in his room at the Washington Hilton, where Trump and hundreds of journalists were meeting for a...