Cameron Alexander

Dr. Alexander was a human scientist stationed at Galileo Base.

Dr. Alexander used the power supplies of the defenses of Galileo Base to run a mini reactor. As such, the base defenses went offline. Not long after Galileo Base was attacked by Covenant forces.

Fireteam Crimson was send here to defend the base and kill the attackers. After the attackers are dead, Dr. Alexander explains that if the mini-reactor isn't turned on again, it will explode and wipe Galileo Base of the map.