3 Echo

3 Echo was a UNSC Army unit stationed on Reach during 2552. During the Covenant assault on ONI's Sword Base, a team led by 3 Echo 57 was engaged by two Wraiths and tried to retreat back into the base in a M831 Troop Transport. However, they were killed by one of the Wraiths.

Known members

 * 3 Echo 57

List of appearances

 * Halo: Reach