I am flying to Orlando from Toronto via DCA changing planes from Air Canada to a US Airways flight (code-shared across UA/AC/US). I know that I will have to move from one pier to another but have heard you have to go through another security screen to get there.

I have about 50 minutes. How long does it typically take to move from one area to another? Is the security screen similar to the one you would go through just to get to a departures concourse?

I know they are more paranoid in Washington than anywhere else. My paranoia is that I might miss my connection.

Ford Prefect