I take it that's some kind of spin-off from HALO? 
Taken from wiki:
"Although the visual background of Red vs. Blue was primarily taken from the Halo series, Rooster Teeth consciously limits connections to the Halo fictional universe. A special video made for E3 2003 portrays Master Chief, Halo's protagonist, as a larger-than-life member of the army, and the Red vs. Blue trailer and first episode establish that the series is set between the events of the first two games. Beyond these references, the storyline is independent, a decision that, according to Burns, is intended to increase accessibility to those unfamiliar with the games. For example, even though the cast of the fourth and fifth seasons include characters from the Covenant Elite alien race, Rooster Teeth never portrays those characters in their original Halo context.[3] Beginning with the sixth season, titled Reconstruction, the series begins to follow Halo more closely. It is established that Reconstruction onwards takes place one year after Halo 3 and several characters indirectly reference Smart AI, the Human-Covenant War, and Forerunners. Also at several points it is noted that Project Freelancer is under the jurisdiction of the United Nations Space Command. "
