The security officer should ask for reason to believe there's a bomb that's a little bit more substantive than, "Dude was speaking a language I don't understand

The security officer should ask for reason to believe there's a bomb that's a little bit more substantive than, "Dude was speaking a language I don't understand." Otherwise we're at great risk of crossing the line from authority-as-protector-of-the-public to authority-as-weapon-the-public-can-use-against-each-other. See also: swatting.