Gambit looked over at Logan from where he was kneeling in front of the crack, then let out a breath and looked back up at the Doctor towering over him. He was quite sure that even though Logan's claws couldn't get through, that he could wedge one of those screws in his pocket, into the division of concrete on the floor, and charge it to explode, and they'd get a small hole. It might take a few of those to make a hole big enough for the Doctor's plan, but he was sure he'd be able to do it. Metal against their technology was one thing. But you couldn't stop an explosion.
However, he was a little more concerned with the water pouring in. He wasn't panicking by any means, but he certainly wasn't nonchalant about it. And the reason for his concern was voiced just a moment later, as he slowly stood up, lifted his eyes to the ceiling that hovered two or three feet above his head, then looked back at the Doctor beside him. "I can' swim." He admitted quietly, before looking over at Logan. "Nei'ter can he." He knew Logan couldn't swim from experience. He was heavy enough that he just sort of sunk. It was amusing, actually.
Still, his words had been deceptively calm. He was relatively sure they weren't going to die, these people weren't trying to murder them, just mess with their heads. But Remy had an instinctive fear of the rising water, because he was unable to swim.