Thought this was relevant in light of John's recent presentation on privacy and encryption: Not Your Average Linux Distribution: DOD's Flavor.
The official download page: Lightweight Portable Security.
Would you trust LPS over getting open-source software from someone other than the government?
On another track: How Hackers Stole 24,000 Files From The Pentagon. The headline is sensationalist and misleading, since it was actually a Pentagon defense contractor who got hacked. Still, makes you wonder about their security.