Not "duty dog" story, rather more "always on duty". Early 80s and I was OC PSF at a fighter station in the Lincs Wolds. Quiet Sunday afternoon at girlfriend's house in Louth (she ex wife of a guy on same station since posted). Her phone (not a mobile in those days) rings, she answers and with a grim face hands phone to me. "It is the Binbrook Duty Officer for you, and tell him next time it would be polite to first ask if you are here!"