 CBS News national security contributor Samantha Vinograd says several other questions will have to be answered as well. There's also a signal being sent to the world right now, which security professionals are likely keeping in mind, which is that the likely Republican nominee for president was not adequately protected. And that does expose a vulnerability to the world. President Biden held an impromptu news conference from Rehoboth Beach, Delaware shortly after the shooting. There's no place in America for this kind of violence. It's sick, it's sick.