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Lunar module expert Paul Fjeld shares details of the MESA—Modularized Equipment Stowage Assembly—on the Lunar Module (LM-2) at the National Air and Space Museum in Washington, DC. The MESA is affixed to the exterior of the lunar module descent stage where the Apollo astronauts kept tools and other equipment. It also held the television camera that filmed the astronauts’ descent onto the lunar surface. We are currently working to conserve LM-2 which has been on display since the building opened. LM-2 was recently moved into the "Boeing Milestones of Flight Hall" where it will be part of the newly renovated exhibition opening in the summer of 2016.