It wasn't hard to get out of the TARDIS, that part had been childs play. Really, he called that ship a good one? It'd sell well because of the retro look but mostly, he wasn't thrilled with it. Old, faulty, easy to break. Hence why he was here, behind the Doctor, and not inside it still. The locks didn't even require any sort of extra coding, what was that all about?

And the guns? Well, John could find a gun anywhere he needed to. The workers had some unusual things in their lockers and while this cheap crappy handgun wasn't the best, he could still blow someone's brains out.

"Hello again," John said in a friendly tone, pressing the barrel to the back of the Doctor's head. "You have five seconds to convince me not to blow your brains out all over the floor."