Halo 3: ODST (Orbital Drop Shock Trooper) is formerly named Halo 3: Recon. Halo 3: ODST is a first-person shooter video game. Attached below is a video of Halo 3: ODST trailer and demo game. This debut trailer of Halo 3: ODST was released at the 2009 Electronic Entertainment Expo (E3 2009) Microsoft press conference for Xbox 360 and PC video games.
Here is Halo 3: ODST demo game (game play) and trailer as presented at E3 2009. This is an audience-recorded video of Halo 3: ODST introduction at Microsoft E3 2009 press conference.