This unit was first created to help TSA federalize aviation security for passenger screening in 2002. The mobile screening unit is staffed by TSA screeners and is now responsible for supporting airports during special circumstances such as seasonal demands and emergencies. Each time the unit is deployed TSA must pay costs related to per diem lodging and meals, travel to and from the airport in need, as well as other incentives. ?This mobile screening unit is grossly misused today, mostly filling staffing gaps caused by low attendance and high attrition,? Mica continued. ?Incredibly, of the five airports that were recently denied their applications to the federal-private screening model, at least three were staffed by the mobile screening unit either permanently or for months at a time. With our limited security resources, it is simply irresponsible to pass these costs on to taxpayers when there is a viable, more cost-effective alternative.? On January 28th, TSA Administrator Pistole denied the pending contract screening program requests of five airports and announced a hold on expanding the program beyond the current 16 airports, stating that there was not ?any clear or substantial advantage to do so at this time.? Among the reasons cited by airports to justify participation in the federal-private screening model are poor customer service from TSA, poor flexibility and scheduling of TSA screeners resulting in long lines during peak times, unnecessarily high cost structures incurred by TSA because of the use of the mobile screening unit, and the ability to lower costs for the airport authority. ?The investigative staff of the Transportation and Infrastructure Committee will continue to review TSA?s distortion and misstatement of facts used in the denial of each of these five airports? participation in the federal-private screening program. There will also be a thorough examination of the metrics, if any, the TSA used to determine if a ?clear or substantial advantage? existed and what the implications are for the future,? Mica said.