Summary: Several internal NASA studies have shown that downsizing has harmed the shuttle program's workforce. Many key areas lack enough qualified workers, and the remaining workforce shows signs of overwork and fatigue. Forfeited leave, absences from training courses, and stress-related employee assistance visits are all on the rise. More than twice as many workers are more than 60 years old than are under 30 years old, jeopardizing the program's ability to hand off leadership to the next generation. This situation also poses significant shuttle program flight-safety risks, according to NASA. To revitalize its workforce, NASA has ended its downsizing plans and has begun to hire new staff. It has started an overall workforce review to examine personnel needs, barriers, and reforms to address long-term requirements. During the next five years, NASA plans to develop and institute various safety and supportability upgrades. The program's success, however, depends on NASA's ability to overcome programmatic and technical challenges, such as a demanding schedule and undefined design and workforce requirements. Continued management emphasis will be critical to the success of NASA's human capital planning.