There's no time to waste. You've got to get up there and defend the Vanguard base. Others are joining in the fight as well, but we really need your help on this.

Post Mission Debrief: Once again, you do not disappoint.

The information you recovered should prove valuable, if my theory is correct. You see, that warning about the raid? It was sent to us by someone who identified themself as a man who's been missing in action since the Rikti War. An American soldier named Benjamin A. Decker. Now isn't that interesting?