in the plane, then deputy sheriff jim dupont had trouble shaking that image. >> everything starts to transform in your, brain of what happened that day. of what happened to her when she went down. you know knowing that you're doomed type of thing. >> but where did she come from? and why. a few hundred miles northwest of little bitter, rule across the border in canada, in the heart of british columbia. is a sweet small city. where on a monday morning, almost a month before they fish that plane out of the lake, ron peterson, then a constable with the royal canadian mounted police, noted unusual activity, out of the airport. >> i saw the search and rescue aircraft, because that always has been a search base. >> so they're looking for somebody. >> when i see things like, that i like to know what's going on. >> what was going on, was this