The Storm (Level)

The Storm is the fourth campaign mission of Halo 3.

It begins with UNSC Warthog convoy moving to Voi, whose objective is to punch through the Covenant Loyalist anti-aircraft defenses that surround the Ark and allow Commander Miranda Keyes to pass through unscathed to the Ark. SPARTAN-117 and the Arbiter engage an anti-aircraft emplacement ringed with highly-ranked and powerful Brutes, and hit it on its weak spot, disabling it, and allowing Commander Keyes to slip past.

Upon completing it on the Normal, Heroic, or Legendary difficulties, the player will earn the "Assault" achievement and 30 Gamerpoints.