>>> that's it for me. i'm wolf blitzer in "the situation room." the news continues in "the situation room." >>> good evening. i'm john king. two major breaking news stories. just released court documents reveal new details about the night trayvon martin was shot and killed and why authorities decided not to go with manslaughter but instead to charge george zimmerman with second-degree murder. the launch window now open and the world is watching. north korea is about to launch a harmless satellite. critics see a stabilizing ballistic missile test in the works. >>> we begin tonight with high anxiety over north korea's threat to launch a satellite, a launch pentagon officials believe is to test a ballistic missile capable of launching a nuclear warhead capable of sitting the main land. weather is such that officials believe the launch could come at