Doctor McCoy was headed down the hall in the opposite direction, looking down at a clipboard and barely watching where he was going. He inadvertantly clipped John's shoulder as they passed each other, and turned to see who he'd hit. He was in the middle of a case that bothered him, so he was distracted. But not too distracted to make sure the other was all right.
"So sorry, I... John?" He knew him and his sister, and though he didn't keep up all that well on his mother's case, he knew that he'd seen them around quite a bit lately. "I'm sorry, I wasn't watching where I was going. You all right?"