The agency filed contract documents (see below), as noted by Nextgov, to explain why it would only pursue contracts with Apple instead of inviting other manufactures to bid. The devices would be used to boost a "widening secure mobile computing pilot" program specifically calling for the use of iOS, the Apple operating system.
The document describes several uses for the products -- which also includes AppleTV, iPads, and iPhones -- in training and presentations, forensic investigations, security testing, iPhone application development, and video and graphics production.
There is also a hint at another request to get Google Android products in the mix.
"The other major TSA capability gap is the 'Google Android' capability which is being addressed in a separate but similar action," the document reads.