Grand Theft Auto V

1. I think GI confirmed a military base to be in the game.

2. Hydra confirmed in the game.

3. Trailer 2: Trevor jumping out of what appears to be an Army cargo plane via an Army looking Jeep-like vehicle (with the star on the back).

I'd say at this point it's highly likely there will be tanks. I definitely would want the Rhino. Something about crushing a car using the RAGE engine seems so satisfying. They should make them hard to get though, not just walking into a military base and taking it or through a cheat code. There should be lots of opposition like there would be in real life.