This project will make some building modifications to accommodate the Terrestrial Reconnection Experiment (TREX). Modifications include remodeling of the space on the second floor above the Plasma Dynamo Experiment (MPDX) to be used for assembly and storage of TREX equipment. An opening in the existing second-floor structure will be created to allow the TREX assembled components to be lowered into the MPDX. A crane will need to be hung from the existing third-floor structure, which will be used to insert the TREX assembled components into the MPDX. There will also be various alterations of some support spaces, as well as some MEP upgrades.