Leo gives the power core one of his patented calculating looks, and Don immediately catches on.

Time stops.

He knows how it feels to defeat the Shredder. He knows, too, how it feels to sacrifice his loved ones to the victory.

"We'd never survive," he says.

But the others are in agreement, and in a heartbeat, a thought, the space between breaths, Don is with them.

Time stops again, but Don doesn't notice. He's already accepted death. When he suddenly finds himself facedown on a bed, in blinding pain but still very much alive, it almost feels like a betrayal.