"Some security staff need to be treated as suspect packages themselves and remotely detonated, I think"
Munich airport in the underground station.
Abandoned suitcase on the platform, no staff around so I asked in a loud voice and multiple languages "Who does this bag belong to?"
Not a flicker, apart from idiots asking sarcastically "So you think there's a bomb in it?"
Called the police who casually drifted in (2 of them) and didn't prevent 2 full trains arriving and disembarking.
2 weeks later, an undetonated explosive device was found on the platform in Bonn....