I'm not saying who this happened to or where, but yesterday someone was impatiently waiting outside the door of a restroom at a gas station, when the guy inside opened the door and left. This person went inside and noticed a Glock handgun in a IWB holster. Thinking the gun belonged to the person who just left, he went out the door and ran after the guy. The guy was parked next to the building (in a no parking zone btw) and the car had governmental plates.

When the good Samaritan yelled "Hey, Sir, wait," and had his hands in front of him palms showing, the guy spun around and reached into his jacket like he was going to put his hand on something.

The Good Samaritan asked, "Did you forget something?" The guy had a look of panic on his face and ran back in the building. Since the GS still needed to use the restroom he went inside also. When the guy came out, instead of thanking the guy the jerk gave him a dirty look, like he was mad at the guy for catching him make a mistake.
The GS now wonders if he did the right thing in even telling the guy, that maybe he should've (after using the restroom since he really needed to go badly) report it to gas station or the police that a gun was found. The guy could've been a prohibited person, the GS didn't know until he saw the vehicle that indicated the guy might not be one.
Fortunately no one used the restroom in the several seconds it took to run after the guy and warn him, but it could've happened. If the GS had locked the door behind him the guy would've had to get a store employee to let him in. Now you might assume that they would easily be able to find a key but I once had an elderly relative who didn't come out after a long time and got no response from the door. I went to an employee and she had no clue where the key was, didn't seem to care either. Eventually one of the other employees called someone who helped them find the key.

They only did that after I said "Okay, I'll just call 911 and have them get the door open."
The relative had passed out but was otherwise okay. Sorry, getting a little off track with this.
Anyway, opinions, thoughts?