Maybe I've been watching True Blood too much.
If I am ever the unlikely hero, I will not try to keep important secrets from my associates ("It's for your own protection.")
I will explain to them exactly what's going on so they understand the stuff happening around them better; at least they'll have context for two city blocks suddenly exploding in neon yellow enamel. They'll probably be able to help more effectively and thus get all of us out of whatever's going down.
Chances are if things go pear-shaped the bad guy will kill them along with me, anyway, so there's really no more bad that can come of giving them the FAQ.