The above incident is incomplete. We only have the poster’s word for what happened before this encounter. One thing’s for sure: there are only a few circumstance (e.g., a kidnpapping) where chasing a criminal is a good idea. Bad guys have a lot more to lose than you do. And they’re practiced in the fine art of being a criminal, with all the violence that implies.
Note: some commentators are saying that the guard shouldn’t have drawn his gun unless he was in imminent danger. I’m not so sure he wasn’t in imminent danger at the start (having been chased and rushed) and then not. At which point not shooting and using the car as a barricade made perfect sense. FWIW I wouldn’t have reholstered either, especially as the aggrieved Dad was shouting SHOOT ME!