This is a GSA class justification for other than full and open competition to lease administrative and support workspace for the XXX that must be located on airport property, excluding security checkpoint screening areas not required on airport property. The need covers senior and administrative workspace such as office, break, training, and storage space at 441 leased locations averaging about 3,000 square feet each, at airports in the U.S. and its possessions/territories with scheduled commercial airline service. The justification relies on the only-one-responsible-source authority because the agency’s aviation security mission requires on-airport presence; XXX was created by Public Law 107-71 and has been responsible for civil aviation security since February 17, 2002. Market surveys will be conducted as space needs arise, required notices will be published and proposals considered, and each contracting officer must determine lease prices fair and reasonable using available market information. GSA contracting activities may use this class justification only when the contracting officer certifies that the lease is within its scope and that the justification is accurate and complete.