 we suddenly heard those loud cracking pops that are now so familiar from that video we've been playing over and over again of that devastating moment. We, like many of the people that we interviewed afterwards, initially thought it might be fireworks. You know, sometimes former presidents' events have pyrotechnics. But when those sounds kept going and then when Mr. Trump stopped speaking, we took cover behind some stage equipment, again, thinking it was just a precaution.