One moment, Zack's raising an eyebrow Cloud's way at the odd look he's been given. The next?

"Explode?"

Yeah, sorry, Spike. That's more or less the first thing on the agenda as soon as he hears him say that. He might also be catching Cloud by the shoulder at this point, completely forgetting the weirdness of his suit, fetching what all he collected from the pod before he starts to move them away at a hurried pace.

"Why didn't you tell me sooner? Just imagine if we'd gotten too caught up talking!" He's really not yelling at Cloud, but he's- he's certainly tense about this new development to say the least.