PHOTOS: Space Shuttle Atlantis Pad Tour

The rotating service structure (RSS) is rolled back ahead of a fuel tanking test on June 15, 2011. (Matt Rece photo)

Pictures often don’t give a proper sense of scale. This one does. (Matt Rece photo)

Explosive bolts attach the twin solid rocket boosters to the launch platform. (Matt Rece photo)

Close shot of the twin solid rocket boosters and external tank. (Matt Rece photo)

Close up shot of the connection point of the external fuel tank to Space Shuttle Atlantis. (Matt Rece photo)

Space Shuttle Atlantis on the launch pad June 15, 2011 (Matt Rece photo)

Atlantis’ tail on the launch pad. (Matt Rece photo)

The last bathroom on Earth! This toilet is just outside the ramp Astronauts walk through to get aboard the Shuttle. (Matt Rece photo)

Space Shuttle Atlantis on the launch pad ahead of a tanking test on June 15, 2011 (Matt Rece photo)

Space Shuttle Atlantis as seen from the rotating service structure. (Matt Rece photo)