Leaders of the Metropolitan Washington Airports Authority visit the factory in Japan where the AeroTrain cars will be built. Photo from May 2005.

A four-level structure will be built here to accomodate the Train station, plus a security screening mezzanine. Photo from March 2006.

This portion of the AeroTrain System departs the Main Terminal Train Station in the direction of the western sections of the Concourse buildings.

Good view of tunnels and stations under construction from south (top of picture) to north--where tunnel curves towards Main Terminal Train Station. Photo from March 2006.

A large hole was cut to build this station which will serve Concourses A and B. Photo from March 2006.

View of the curve departing the eastern end of the Main Terminal AeroTrain Station. Photo from March 2006.

Site of the Concourse A and B AeroTrain Station. Photo from March 2006.

Structural work underway at the western Concourse B AeroTrain Station. Photo from March 2006.

Airplanes continue their activity in the background as construction proceeds on the eastern Concourse C AeroTrain Station. Photo from March 2006

AeroTrain cars were assembled at this factory in Japan. Photo from July 2006.

Close-up view of an AeroTrain car in the assembly plant in Japan. Photo from July 2006.

This is an AeroTrain tunnel nearing the end of construction, just outside the eastern Concourse C station. Photo from July 2006.

This is the eastern Concourse C Station, looking down the area where the train will travel and the platforms on either side. Photo from July 2006

Concrete layers above the eastern Concourse C AeroTrain station are visible here. Photo from August 2006.

Inside view of eastern Concourse C AeroTrain station under construction. This station is in a more advanced stage of construction than the others. Photo from August 2006.

Workers at a section of AeroTrain tunnel working with the forms for concrete walls. Photo from September 2006

Excavation is complete on the Concourse A-B AeroTrain station. The station will be built up from here to connect with the Concourses. Photo from September 2006.

The first two AeroTrain cars roll out on to the factory test track in Mihara, Japan. Photo from September 2006.

A completed AeroTrain tunnel is below this area near the southern part of the Airport. The dirt is being filled back in to cover the tunnel. Photo from September 2006.

Concrete forms fill the site of the western Concourse B AeroTrain station. The new Airport Traffic Control Tower is visible far in the background, for reference. Photo from September 2006.

Looking down into the western Concourse B AeroTrain station. Photo from October 2006.

Guideway in the installation process at a point in a tunnel where a crossover is located. Photo from March 2007

Work on the Concourse A train station reaches ground level. A pedestrian bridge over the site is visible in the background. Photo from April 2007.

View of the Concourse A train station and construction crane from inside the pedestrian bridge. This was a popular place to view the progress throughout the project. Photo from May 2007.

The first completed AeroTrain vehicles arrive at the shipping port in Japan. Photo from April 2007

The AeroTrain cars are gently lowered into the hull of the container ship "Millenium Falcon" which is bound for the United States. Photo from April 2007.

After a long journey, the AeroTrain cars arrive at the Port of Philadelphia. From there they were trucked down I-95 to Dulles Airport. Photo from May 2007.

One of the first four AeroTrain passenger cars is lowered to the ground at Dulles. Next it will roll in to the AeroTrain Maintenance Facility. Photo from May 2007

AeroTrain car number 1 has rolled in to the AeroTrain Maintenance Facility; car number 2 is next to enter. Photo from May 2007.

The green buildings are directly above the Concourse C AeroTrain Station. A future, new Concourse C is planned for this site. Photo from May 2007.

Interior view of the progress of Concourse A AeroTrain Station as of August 2007.

Interior view of the progress of Concourse B AeroTrain Station as of August 2007. Escalators are under a protective wrap.

Interior view of the progress of Concourse C AeroTrain Station as of August 2007. View looks through the train tunnel before glass installation.

Twelve AeroTrain cars and one maintenance vehicle onsite at Dulles as of September 2007.

The 29th and final passenger car of AeroTrain's initial fleet arrives at Dulles. Photo from February 2008.

AeroTrain passenger vehicles fill the maintenance facility. Photo from February 2008.

16 of the 29 AeroTrain vehicles can be seen in this photo. The other 13, plus a maintenance vehicle, are in another large area beyond the maintenance bays.

AeroTrain testing begins. Each vehicle needs to be programmed to run automatically throughout the system. Photo from April 2008.

View down the escalators on to the center platform of the Concourse A AeroTrain station. Photo from May 2008.

View looking from a train tube in the Concourse B AeroTrain station. In the distance the tunnel curves towards the Main Terminal at Dulles. Photo from May 2008.

The Concourse C AeroTrain station at Dulles, nearing completion. Photo from May 2008.

A tunnel crossover such as this one allows the trains to switch to a parallel line if necessary. There are two parallel lines throughout the AeroTrain system at Dulles. Photo from May 2008.

This passenger tunnel will connect the Concourse C AeroTrain station with the Concourse. This will serve passengers until a future, permanent concourse is built directly above the AeroTrain station. Photo from June 2008.

View looking down the escalators of the Concourse B AeroTrain station from the Concourse level to the train platform. Photo from July 2008.

Looking up from the Mezzanine level of the Concourse B AeroTrain station. The train boarding area is one level below. Photo from October 2008.

Looking down from the Concourse level to the Mezzanine level of the B-Gates AeroTrain station. Lots of natural light fills this station. Photo from December 2008.

Exterior view of the pedestrian connector linking the C-Gates AeroTrain station with Concourse C. Utilities and roadways were bridged over the site during construction. Photo from December 2008.

Good view through a tunnel which won't initially be seen by passengers. It extends beyond the C-Gates AeroTrain station enroute to the AeroTrain Maintenance Facility. Photo from February 2009.

This structure sits atop the location of a future AeroTrain station. A future concourse is also envisioned here. Photo from February 2009.

Inside this future AeroTrain station is a structural shell where the station can one day be outfitted. Photo from February 2009.

View inside the A-Gates AeroTrain station, February 2009.

View inside the A-Gates AeroTrain station, February 2009.

Mezzanine-level view inside the A-Gates AeroTrain station, February 2009.

Platform-level view inside the A-Gates AeroTrain station, February 2009.

Looking down to the B-Gates AeroTrain station, February 2009.

Escalators and elevators connect the B-Gates AeroTrain station below with the Concourse above. Photo from February 2009.

Initial view upon entering the C-Gates AeroTrain station from the connector tunnel. Photo from February 2009.

A bridge traverses the C-Gates AeroTrain station at Dulles. Photo from February 2009.

Platform level view inside the C-Gates AeroTrain station, February 2009.

The connector tunnel which runs between the C-Gates AeroTrain station and the existing C-Concourse. Photo from February 2009.

View inside the A-Gates AeroTrain station, July 2009.

Platform-level view inside the A-Gates AeroTrain station, July 2009.

Looking down to the B-Gates AeroTrain station, July 2009.

Escalators and elevators connect the B-Gates AeroTrain station below with the Concourse above. Photo from July 2009.

Trains are visible as they pass through the glass tubes at the B-Gates AeroTrain station at Dulles. Photo from July 2009.

A train passes through the C-Gates AeroTrain station at Dulles. Photo from July 2009.

Platform-level view of the C-Gates AeroTrain station, July 2009.