US Military vastly outspends opponents on radio gear

At the Wyong field day this year I bought a book on the history of military radio. An entertaining read although the author covers the history of wars and radio along the way.

Ars Technica has an interesting piece about US army radio which has chosen a hard technical path requiring the use of CORBA software interfaces in radio software.

This seems particularly amusing in the light of all those images we've seen of non-american combatants using Icom and more recently Baufeng radios which cost tens of dollars each instead of hundreds of thousands of dollars each.

How does the US pay for all of their extravagent military expense?