Dammit!

Don't go in the server room, Jack.  Whatever you do.

I'm a little blurry on how Tanner could be in London already.   Where was the drone base he was on 3 hours ago? Beyond how the US government could decide to agreed to turn a US service member over to the British in that timeframe.

Remember how Jack got from the west side to Queens and back in an hour?

Yeah.