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A full-scale pathfinder of the James Webb Space Telescope (JWST) sunshield sits in a high-bay at Northrop Grumman’s Space Technology facility in Redondo Beach, Calif. The pathfinder has undergone folding and deployment trials to verifying its design concept and deployment techniques. The pathfinder is one in a series of engineering models built by Northrop Grumman and its JWST team to reduce risk on the program.