Originally Posted by
daffy99
Yes, ground halt at IAD a couple of years ago for westbound aircraft, as Air Force One headed into St Louis. I happened to be listening to Channel 9, and while no-one would say the reason for the ground halt there were a few pilot comments about the "terrible weather in St Louis" on a perfectly clear day...

Decently common occurrence at IAD depending on where the President / VP is going out of Andrews or if other dignitaries are in town. Actually was on a flight out of IAD before Sandy and we got halted an extra 45 minutes with the storm bearing down on us b/c of VIP movement (aka Obama heading to a campaign event). Thankfully we were in a 763 and they were committed to getting that plane out to ORD (one of the last out of IAD that night) because it was packed full of crew that they were getting out of IAD.