Halo: The Master Chief Collection: Halo 3 ODST EP 24 Mission 6-7 ONI Alpha Site & NMPD HQ Part 2

The level opens as Mickey and Dutch are setting demolition charges to destroy the bridge leading to the complex to prevent the Covenant forces from accessing it. After the charges are armed, an NMPD officer commands the Superintendent to unlock a keypad on a bridge toll booth so they can remotely detonate the charges. The AI is hesitant at first, but eventually lets Dutch destroy the bridge. After this, they fall back deeper into the facility, fighting off more waves of Covenant until they are forced to retreat into the ONI building itself. Dutch and the NMPD officers fight off the squads of Brutes, Grunts and Jackals that continue to push into the building. Eventually the fight is brought up to the roof of the facility, where the final Covenant infiltrators are killed. A Pelican picks up Dutch and Mickey, and the level ends as Mickey remote detonates the charges in the ONI facility, destroying it, and awakening a Drone Hive below. Chronologically the fifth flashback level, NMPD HQ begins at 19:14, three hours after the squad's insertion into the city. Buck and Romeo have made their way to the top of the NMPD Headquarters building for pickup by an NMPD Pelican dropship. With Dutch and Mickey already on board, the Pelican is shot down by Banshees and crashes on another landing platform. Buck and Romeo must make their way across the upper floors and rooftops of the city's tower blocks to reach their squadmates at the crash site. Once there, they defend the downed Pelican from oncoming Covenant Phantoms and Banshees. Finally, a Brute Chieftain drops from the last Phantom and severely wounds Romeo before the rest of the squad manages to kill it. Lacking air transport, Buck decides to evacuate the squad through subterranean train tunnels leading to the old city, and the squad heads for Kikowani Station.