Dulles Airport, Washington DC. Couple of hours to kill, ate a meal, then decided to do the walk from one end of the concourse to the other....I calculate the concourse is at least a mile and a half, so that would be 3 miles, should take another hour.....
Stopped at the farthest end from my London gate....to catch my breath, leaned against the barrier of a flight to Texas, where the pilot, hoping NOT to have to offload the bags of a missing passenger, asked me "Are you for Houston?"
Without any thought, I firmly replied "Negative!"
His look of surprised recognition and brotherhood kept me airborne all the way back to the London gate.
PS. I don't look like a pilot, I look like a granny. Heck, I am a granny.