Because this is a lot to wrap your mind around without a lotta warning.

[And he knows how surreal it all feels after you've gone through something that's left you covered in someone else's blood.]

I had a key in my pocket when I got here. [Which he hadn't realized at first, because his uniform's got lots of pockets and he had a lot of other things on his mind at the time. But:] It should be somewhere familiar. I recognized my door.