Minerva has not found a bar in her closet in quite some time - not since she was Hogwarts Head Girl, in fact - and so she has very nearly decided that it is one of those Hogwarts-specific phenomena, like the Hogsmeade passage behind the portrait of Goricke the Unwieldy on the sixth-and-a-half floor, and the extra bedrooms that appear every fourth full moon.

And besides, since her graduation, she has been far, far too busy for such amusing trifles as a gillywater-and-tonic in front of the Viewing Window.

So when the bar turned up where Bletchley's canteen should have been, she was at least a little surprised, and perhaps at least a little pleased. She took her lunch outside with her, in the end, to eat somewhere a little less like a mess hall, and so there is now a young woman (tall, boyishly slim, black hair neatly pulled back, severe secretary spectacles) in an immaculate ATS uniform looking somewhat dismayed at the firing range where she had hoped she would be eating her sandwiches.