yes a machine/grenade gunner and a pilot
There is no Sparrowhawk in Reach but you can fly the Falcon.
beat it up
No, it only has turrets!!
The Falcon is like any other vehicle. It is on Forge, yes. But it is also in both campaign and multiplayer.
Falcon, Banshee, Longsword, Pelican, and phantom
Halo reach is a very complicated game so there is no possible answer to this.
Yes you can drive/fly the falcon on halo reach , there a 2 types : one with a turret on the front and 2 machine guns for passengers , then the other one has no turret - just machine guns for your friends to fire.
It is not possible
Mongoose, Ghost, Revenant, warthog, banshee, falcon, wraith
I do not believe they are currently making a Halo movie, though Avatar is a fairly good substitute. [They even added the falcon! And yes, it is in Halo: Reach.]
Currently there is now way possible to mod with a USB in Halo Reach online.
If you are in the turret......but if you are flyng one in a campaign mission, you can shoot turret bullets.