Halo 4 UNSC Weapons, Vehicles, And Mechs

We've previously seen what we can take off the Prometheans, but what will Master Chief's backup be bringing to the fight in Halo 4?
Quite a lot of old favorites, as well as some new vehicles and an old enemy.

[Dread]

Mechs?

o snap!

[Irishguy95]

Spartan 1 program was somewhat Mech like..so bout time :P

Wow though, they look so much like Metal gears. Or gekkos

[aviator189]

I know there were going to be mechs for a while, but seeing it actually shoot at that ship is so awesome.