The purpose of the overall CEAT Performance/Capability Assessment Program is the examination of technologies and technology systems using science-based assessment procedures to assure the FAA, and the public, that the use of technology at airports is: 1. justified based on proven performance, 2. that use does not compromise safety, 3. use is compatible with all aspects of airport operations. The performance assessments of FOD detection systems focus on different technology types (stationary radar, video, and hybrid radar/video; and mobile radar) at civil airports.  FOD detection system installations have been made at Providence's T. F. Green airport, Boston's Logan International Airport and Chicago's O'Hare International Airport.