I thought Grissom left. Maybe he was walking to his car when Warrick was shot and that's when he found Warrick.
I'm certain he was one of the first to leave. Assuming he doesn't walk at the speed of a geriatric slug, that's quite a length of time. The others leave, Warrick talks to Nick, Warrick leaves - now
he walks at quite the leisurely pace. UnderSherrif arrives, has the flattering chat with Warrick, then the gunshot.
Looks like we should be congratulating Grissom's ear surgeon for a job seriously well done. He must have been a mile away when he heard that shot.
*is just a little peeved* :shifty: