The action ramps up in episode 4 of Halo 4: Forward Unto Dawn.
Halo 4: Spartan Ops - Episode 7 Trailer
The seventh episode of Halo 4: Spartan Ops is shaping up to be an action packed one, according to this trailer.
Halo 4 - Composing Worlds
This developer video for Halo 4 shows how the musical score was created for the upcoming sci-fi game.
Halo 4 - Developer Showcase
The developers at 343 Industries discuss the upcoming Halo 4 shooter game.