My use of "friendship airport" was a little DC area humor---it divides the recent transplants from the "oldtimers." ( i.e., anyone here when either incarnations of the baseball Senators played. I saw them as a tot.)

And it was the Baltimore airport---I can't remember really using it much til the late 80's, though they have been marketing as Washington's easiest airport for at least 20 years.

(of course, that was before the current construction. Now I guess you'll have to arrive 4 hours early, you needed 2 to get into the terminal prior to the increased security measures)