With new witness accounts, Jonathan Karl reports on the shooting at the White House Correspondents Dinner; Pierre Thomas reports on new details about Cole Allan - the man authorities say is the alleged gunman, and the writings sources say allegedly shed light on a possible motive. Aaron Katersky reports security concerns raised in the wake of the shooting. And James Longman looks ahead to the state visit from King Charles III and Queen Camilla --------------- 00:00 Intro 02:12 White House