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Lisa Campbell is willing to crawl on her hands and knees to help with the Return to Flight effort. As an aerospace technician with United Space Alliance, she spends up to 10 hours a day installing temperature sensors inside Space Shuttle Discovery's left wing. The sensors are part of a new safety measure called the Wing Leading Edge Impact Detection System. On all future Space Shuttle flights, 22 temperature sensors and 66 accelerometers will monitor each wing during launch and throughout the mission. They'll collect data and quickly transmit it back to Earth. Instead of wiring and installing each sensor individually, Campbell's team is completing the work in three phases. As she crawls through the wing to reach the leading edge, Campbell has to dodge parts of the orbiter's airframe and maneuver through increasingly small spaces. She even has to bring a light and equipment along, too. But despite the cramped conditions, Campbell loves her work and the opportunity to see Space Shuttle Discovery from an unusual perspective.