The James Webb Space Telescope is being tested at a number of facilities, including some operated by NASA. One of these locations is in Huntsville, Ala., at the Marshall Space Flight Center. Engineers are repurposing a test chamber originally built for another one of NASA's Great Observatories, the Chandra X-ray Observatory. Chandra was launched into space 15 years ago and continues to be a vital contributor to our understanding of the universe. Behind the Webb's Mary Estacion takes us to Marshall to explore Webb and Chandra's common bond.