Okay, I'm thinking of ways to deal with those guys without blowing them up.
A takedown (presumeably with headshots) before put they put their thumb on the deadman trigger might work. Star generally isn't willing to use her powers directly against normal people without some powerful emotional (as opposed to tactical) impetus. And Apollo doesn't have multitarget attacks without stunting. EDIT: Also, a sophistated suicide vest designed to go against superheroes will probably explode at unconsciousness. These people seem to have some ordinary gear, and some super-tech stuff.
Optic might be able to use his power to block the arming or detonation signals. But he can only do one at a time normally (and I hestitate to have someone being NPC'd at the moment power stunt)
Talking down suicide bombers seems problematic (even without any language issues). Some people do have lots of social skills and CHA, but it still seems like a big stretch.
Any other thoughts on solutions that we can pull off within the next few rounds? I'd rather not act with undo haste in this situation...
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I'd prefer to remove them from the blimp for doing anything to them. We probably want that equipment intact. First of all, exploding those tanks could spread the spores, making the problem rather widespread. Also, there are presumeably hostages on board - apparently, the crews for those blimps can be pretty big. We'll also want the gadgets as evidence, back tracking them to the makers, post cog readings, etc.
So I was thinking of blowing out the floor of main compartment, to the drop the 3 guys out of the blimp. Skylark can create an antigravity bubble to catch them and also prevent the pieces from falling on people.
With the presumed terrorists held in mid air, self detonation would probably just kill them, I hope. And if they can't take anyone else with them, they might be less likely to push the button too? Hopefully, our flyers should still be able to back into the blimp and start turning stuff off, saving people, and such.
Even if the blimp is only a few thousand feet up, that should still us at least 1 full round to respond to any falling thing in case of emergency, right? Maybe more with air resistance or something near the high end of that altitude ranger.