Responsibility for maintaining the approximately 1,230 staffed FAA facilities-ranging from administrative buildings to operations buildings such as air traffic control towers-is distributed among FAA, GSA, and other entities, as shown in table 1.7 6 GAO, Executive Guide: Leading Practices in Capital Decision-Making. Within FAA, several components hold responsibility for facilities maintenance, including the Air Traffic Organization (ATO), Mike Monroney Aeronautical Center (Aeronautical Center), and William J. Hughes Technical Center (Technical Center). ATO maintains facilities supporting air traffic control operations at multiple locations across the country and overseas.