Security guard didn’t shoot anyone.
“Pleasanton police Lt. Erik Silacci said Knapps had been attempting to steal an electrical item and was ‘determined to exit without paying.’Mohs confronted her and a ‘physical confrontation ensues.’Silacci said Knapps then pulled out a handgun and fired what would be fatal shots at Mohs.”
I understand, but Security guard undoubtedly had many training sessions about not chasing for stealing stupid little stuff.
He either knew and/or recognized them, or they dissed him in some way that required he follow them.