Steve started to pick at the crust of his sandwich, taking tiny little pieces off. "I've already been to see Dr. Banner and he's running tests and stuff but.....basically." He cleared his throat. "I know that the island's put you back in my condition every now and then, and I know that Bucky switched with dad that one time. I guess just...." He shrugged. "How did you guys....do that without major issues?"