Remarks: Southwest Airlines N623SW (FLT SWA611) taxiing to RWY 23 for departure to Baltimore/Washington Int'l (KBWI). This aircraft is a 737-3H4 that has been fitted with winglets within the last year.
Remarks: As the 6 o'clock hour approached a steady tail-wind had picked up. I guess the tower decided to change the landing pattern so this 'Bluebird' powered back up and headed for a different runway.