Flight plans will be finalized 3 to 4 hours prior to scheduled ER-2 launch. During this time, interested participants along with Steve/Chris will formulate the flight plan. A typical flight planning session will include review of latest satellite imagery and weather data in the context of Primary science objectives. Secondary objectives (listed as "Other" in Science Objectives Section) will be incorporated into the flight plan on an "opportunity" basis. Steve and/or Chris will brief the ER-2 pilot. Once a flight plan has been provided to the ER-2 pilot, no further changes will be made