Yeah but this is like 3rd degree the CIA also has invested in Facebook.
The DOD is the largest provider of grants in the academia.
And at the end various arms (quite often defense related) of the US public sectors are quite often one of the biggest investors and drivers behind new technologies. 
The valley could not exist without the USG and specifically without DOD money.<p>While I completely understand people that say would not like to work on the next generation of guided missiles, one would be hard pressed to find job in the tech sector that is not partially funded by the more militant parts of the US government, and if they completed STEM studies in the US more likely than not that some of their grants and scholarships were funded by the DOD directly.