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In this photo released by the Alaska National Guard, Alaska Army National Guard soldiers use a CH-47 Chinook helicopter to airlift an abandoned bus, popularized by the book and movie "Into the Wild," out of its location in the Alaska backcountry in light of public safety concerns, as part of a training mission Thursday, June 18, 2020.

In this photo released by the Alaska National Guard, Alaska Army National Guard soldiers use a CH-47 Chinook helicopter to airlift an abandoned bus, popularized by the book and movie "Into the Wild," out of its location in the Alaska backcountry in light of public safety concerns, as part of a training mission Thursday, June 18, 2020. (Sgt. Seth LaCount/Alaska National Guard via AP)