The rooms in that big facility were each labeled with a mail-stop code so I gave him the mail-stop of the computer lab and asked him if he knew where that was. He said yes, and agreed to go there for me. He said it would take him a few minutes to get to the room, and I said I'd call him in the lab, giving the excuse that I was using the only phone line available to me and I was using it to dial into the network to try to fix the problem.