analysis - hunger games (trailer)

In the hunger games trailer it start in a calm and peaceful woodland. this is instantly changes and we see a fireball slam into a rock behind her and she is running surrounded by fire, this is the equilibrium of her  peaceful life bracken and doing so this early in the trailer is an indication of the structure if the film. Over the whole thing we hear a mans voice instructing and telling the main skills and points of the film.
trailer #1
The heroine climbs through a fence (showing she is leaving her enclosed and caged world) and goes into a thick woodland where she is sitting with a guy who she appears to be close to, this is the "calm before the storm" when all is normal in the characters world. She is hunting working with the guy as a team; this reinforces their relationship as a couple or very close friends. The voiceover of the guy saying they could leave is struck down by the girl saying "you wouldn't even get 5 miles" suggesting that they are trapped and controlled (a totalitarian state). This is then confirmed by the appearance of a futuristic almost alien looking flying craft which they run and hide from; the craft is bright with lights and technology and looks extremely advanced and expensive, this is the assumably the controlling force that they spoke of earlier as the 1.they hide from it as they are on the other side of a fence (in land that is restricted). 2.they are using a wooden bow  to hunt in what we can assume is the future and perhaps weapons are banned. 3.the ship has searchlights blaring down on looking for them or simply to scare and seem far more powerful con unavoidable.
A group of young people, dress in what we can assume is their bets clothing, walking to a large grey building with a stage and giant screens showing them walking in (they are being watched and need to know they are watched.) A woman in bright colors and strange makeup is on stage speaking very formally; she is the apitomy of extravagance and a complete juxtaposition to the grey world we have been previously introduced to. Then as her sisters name is called out her world shatters and she takes her place in a extremely dramatic and heart wrenching moment, the extremity of how this moment is portrayed show how big a commitment she has made volunteering to take the place of her sister. we then see them transported away to a huge futuristic city were she is primed for "the games" and told what he purpose is and we her a voice over telling us some of the story behind why the games exist. It represents them as a trapped and subdued people, who are forced to survive in a world they don't control as they have been taken somewhere and were the uniforms they are given when training and do as they are told completely.