From Halopedia, the Halo wiki
He was a member of Second-Alpha Squad. During a training exercise where the trainees were meant to protect Harvest's reactor complex, Burdick was ordered to open the door of a sedan, which turned out to be booby-trapped with Claymores. After the explosion, Burdick was injured and had to be helped to safety by his squad leader Stisen. His injuries were presumably only stun and pressure, as during the training exercise only training rounds were used.
List of appearances