Her breath catches. Although Peggy doesn't laugh in this moment, she does offer up a sheepish smirk. The side-effect of devoting so much of one's career to the United States of America means that she can be ever-so-slightly infected by their navel-gazing. To a Brit, it's simple enough to say America and mean precisely that. But -- well!

"North, I should think." Peggy waves a dismissive hand. "Based on fixture outlets and the scraps of paper left behind -- all with scrawled English. Unless it's some sort of off-soil American base. I haven't precisely ruled that out. Not yet."