I, shed a tear when i saw this trailer.

This is a trailer of the live action version of Halo 3: ODST [Orbital Drop Shock Trooper]. ODST is an elite group of UNSC Marines that specialize in special warfare tactics. Their method of infiltration by orbital drop allows them to conduct missions against targets that other conventional forces cannot approach undetected. They, are different from those Spartans, who went through a series of mechanical and biological augmentation.

When this elite squad were introduced in Halo, it was the 105th Orbital Drop Shock Trooper Division, nicknamed "Helljumpers" that made the appearance.

I hope that they'll come out with the Halo movie soon, although i heard rumors of it being canceled =[



Updates:
FULL TRAILER