This is an E-supplement to GAO-13-222 This e-supplement presents the results of GAO's Web-based survey of executive branch agencies about how they approach the physical security of facilities that the Federal Protective Service (FPS) is not responsible for protecting. The survey asks agencies questions on 1) the organization and administration of their agencies, 2) sources used to inform physical security programs, 3) security program policy elements and implementation, 4) challenges and best practices in physical security, and 5) the agencies' building portfolios.