A stunningly clear graphic has been doing the rounds in the last 24 hours of US Intelligence Funding by agency (NSA, NRO, CIA, FBI etc), and the main purposes of what those large buckets of money are spent on: Data Collection, Data Processing and extrapolation, Data analysis, etc.
The source for this wonderful graphic is the FY2013 Congressional Budget Justification Book.
Click on the image for full size.
Agency funding and purpose
Below is the top 5 agencies funding looks like over a 10 years period, and each agency’s stated purpose.