From a New York Times news analysis by Peter Baker headlined “A President Untethered”:

WASHINGTON — He flung his lunch across the room, smashing the plate in a fit of anger as ketchup dripped down the wall. He appeared to endorse supporters who wanted to hang his own vice president. And in a scene laid out by a former aide that seemed more out of a movie than real life, he tried to wrestle away the steering wheel of his presidential vehicle and lunged at his own Secret Service agent.