[RightFighter]

If the idiot saw him holster his gun, that means the gun wasn’t concealed and the exposure was not inadvertent. That’s a violation of the law.

[Beagle8U]

He saw the gun at his car before he put his jacket on.

[Theoria]

Not in Florida it isn't. One can transition or adjust your gun. It can be seen by the public, but as long you aren't threatening anyone or similar such actions, you are in no way at fault for exposing your firearm or other weapon.