Since I haven't been rescued lately, I can't answer this one. How is your little survival campsite left? When do you put out the 3 signal fires, pack up your stuff, take down the garbage bag tube tent, fold up your air panel & remove the poncho that is tied to trees for shade, etc? Do you rush around, or will the helicopter wait? The fires, air panel, & tent/shelter must stay up until you are sure that you will be rescued shortly. OR do we forget about the environment & just leave our trash & fires behind?