It'll be interesting to see the intersection of this and forge.mil (which was/is the DoD's implementation of SourceForge and associated services). About 5 years ago, there was a fair amount of Open Source Software being ran in DISA for supporting the branches and the software that they wrote, but, there was little open-sourcing of that software, even amongst the individual branches of service (the Marines might write something that the Army could use, but, there were political or other factors that precluded that from happening).