M.m.f.d.

'During the first Gulf War, the USAF and the RAF had the same maps and
communication was very informal. On a training mission a Tornado was
asked whether it had reached a certain point, when the British pilot
replied that he was still over MMFD. As time went by many American
pilots heard the location repeated and looked desperately on their maps
but couldn't find the area designated MMFD. They thought it could be the
KKMC for King Khaled Military City or the KFC for Kentucky Fried Chicken
but all was permanently discounted. Eventually through a Brit pilot they
came to know that MMFD stood for "miles and miles of fucking desert'.
[Adapted from Frederick Forsyth's The Fist of God]