"Over the course of the last five years, the Fedora Project has tried to live up to its founding vision with no less than 9 full distribution releases and has millions of users. "
"A key to Fedora's success has been that each distribution release really has pushed the envelope forward on Linux. With the Fedora 2 release in May of 2004 Red Hat included SELinux (security enhanced Linux), which adds mandatory access controls to the Linux kernel."