This airport has one of the worst security screening processes of anywhere I have seen (except the DL terminal at FLL).

If you are an elite/fc flyer, then you have a special line at the C concourse, but not the D concourse. The D concourse line can stretch all the way into the International Terminal at the far end of the airport.

The only mitigating circumstances in this hellish nightmare are:

1) being entertained by the looks of shock, astonishment and horror as the new passengers walk around each hallway corner trying to find the end of the security line

2) the surly 'line guards' who will walk the line about every 10 minutes and start screaming "6PM and earlier, can move to the express line NOW!", as they pull passengers out of the main line within 35 minutes of departure time. So even though the line looks bad, just cool your heals because eventually someone will pull you out to join the shorter express line.

I have found it easier to get there about 45-50 minutes before departure, check-in, then hang out of sight until roughly 35 minutes before my departure, then just join the shorter express line. Be careful about check-in times...if you are not elite/fc, or cant use the machines, you might find the check-in experience at some carriers there to be a nightmare in itself.

Good luck with your upcoming BWI experience!