The trip is usually a 6 day trip out of DFW.

DFW-LGW AA 50
LGW-RDU AA 173
RDU-LGW AA 174
LGW-DFW AA 51

The RDU-LGW flight is a subsidy by a company named Glaxo Wellcome that does tons of business in RDU and London, the flight is usually mostly Glaxo employees.

Yes, FB is "Food Boy" and FC is "Film Critic!" At TWA the term was "Eater", UAL calls 'em "Bunkies." Every airline has a cute term for them I guess. 73