text:  you can actually see the bullet in one image on its trajectory towards Mr Trump's head. We'll also be asking, what did go wrong with security? How was a gunman able to get so close? And what do we know of the would-be assassin? Thomas Matthew Crooks was just 20 years old. What could have been his motive? And, of course, we'll ask what all this does to the race for the White House. There's a lot to squeeze in. Let's begin with a quick look back at how events unfolded.