With the expected acquisition completion of Whole Body Scanners with Advanced Imaging Technology (AIT), the TSA would have installed 878 units across 140 U.S. airports. According to the U.S. Congress GAO, the total lifetime cost for these machines will be $3.5B. This means that the actual purchasing ex-factory unit price of approximately $170K represents less than 5% of the costs with the bulk 95% comprising of systems installation costs, TSA 24/7 screeners labor costs, training, upgrades and maintenance costs.
The recent planned procurement announcement of 878 machines actually goes back to the original pre-2009 installation plan. In response to the Dec. 29th, 2009 bombing attempt, the TSA proposed the procurement of 1,800 additional AIT systems, then reduced to 1250, and finally went back to the originally planned 878.