Rick had never been up so high as R1. He waited at the top of the stairs while Micah railed on that particular door, and when there was (unsurprisingly) no reply, he turned and headed back down the stairs without waiting for Micah to accompany him. As he walked down the stairs (just out of sight and ahead) he was thinking about all the people in the building this man knew, and how oddly different that situation was from his--Rick sought no connections, emotional or otherwise.
Perhaps it was becoming safe enough to do so... as long as he didn't make it too public.
The med kit was waiting for Micah at the first floor landing--but Rick was nowhere in sight.