Shut up, Sherlock. And put on your damn respirator.

[There are times when John appreciates Sherlock's insight... and then there are times that his seeming ability to read John's mind prickles.]

Caroline Matthews. Okay. Fine. She's got an accomplice unless you find something about her being a technical savant in the next few hours. Good with tech. Might be someone she knew in the service. Someone she convinced... maybe another wounded vet.