The NSA, the original primary developer of SELinux, released the first version to the open source development community under the GNU GPL on December 22, 2000.[6] The software was merged into the mainline Linux kernel 2.6.0-test3, released on 8 August 2003. Other significant contributors include Red Hat, Network Associates, Secure Computing Corporation, Tresys Technology, and Trusted Computer Solutions.
Can you expand on that please? Sounds interesting
In 98/99 they released a set of pdf, ini, and inf files with NSA official guidelines on creating an NSA approved NT4 server / workstation suitable for running in their internal environments from a scratch install. So I took a box and the NT discs and went home and hammered it for months. It allowed me in part to move from a boutique development Admin to working on the JSF X-32 at Boeing just two years later.