[quote=Polyphemus]
Brandish a gun near some cops sometime. Don't threaten to use it, just brandish it. See what happens.It's the same basic concept. Holding a detonator is the same as saying "Listen up, fellas, I'm going to set off some explosives."EDIT: Please don't think I'm trying to be rude to you or anything like that. I'm just a little surprised by how nonchalant everyone is being.
[/quote]

Except, as I'm sure you realize, these guys aren't cops. :P
Among other things, a bomb is just a man-made object as powerful and dangerous (or even less powerful) than the innate abilities of every breathing person in that room. The detonator is just more "visible". It all depends on the intents of the person wielding them.

Two people walk into a room; one who can create explosions with their mind, and one with a detonator in their hands. Both look equally angry. Do you care about the difference, or are you afraid of both of them?