Thanks to all who have posted. I only flew into DCA once before and that was back in the early 90s so much has changed. When I booked the flight, I didn't realize that you have to clear security moving between piers as I haven't run into that at other airports I have been to. Making connections at a Washington airport seems more complicated than I thought. I am arriving on a Saturday morning about 1100 AM and my departure flight is at 1150 AM. Assuming I am on time, I hope I am OK.

I suppose if I am held up, I could make a later flight. US Airways has a non-stop leaving at 3PM or maybe a connection via CLT.

Keeping fingers and toes crossed.