jackpoter says noup is the time to make the situation better. >> we have to make sure that we accommodate people who travel through this airport in a very comfortable environment. >> reporter: another change, the new security screening area that will be built between the metro station and the departures and 150,000 new square feet of space. that will put the main hall of reagan behind security. you'll no longer be able to walk in and hang out here. but space waiting for someone to get off of a flight is being built and new shops and restaurants will likely be added. at a board meeting today, the airport officials are all smiles about this $1 billion investment that's coming here to reagan. >>> as one project begins, another is wrapping up. it took more than two years to complete but this week all five of the underground escalators at the pa these da station are up and running. mark sea graves was there as the first passengers took a ride. >> reporter: over the past few years metro has been busy fixing and replacing escalators. >> we've installed 67 new year. another 153 have been rebuilt