[Karev's touched by relief to lay hands on something, finally, grabbing at limbs and what's in reach as he sinks down with Aidan's body. Touching down on the ground or the closest object to them at that point, he shoves off it and back toward the surface. A steady stream of bubbles guiding the way up, he's nearly out of breath when he sucks in a gasp and gets a good look at who he's found.]
... Goddamn it. Y'gotta be - freakin' - kidding me. [Braethless, he's looking around for somewhere to drag Aidan onto - attempt at one roof ending in failure of going against the current, he makes do with the agonizingly slow swim to another, dragging Aidan along. Slamming him down flat and dragging them both out of the water's icy grip, there's not a beat of hesitation before he's giving CPR like a true professional.]