It's a recently-found 1950's short film by Idaho's Fish and Game Department about re-homing beavers/muskrats/etc. by loading them into crates and parachuting them into their new home site! If this isn't perfect material for RiffTrax, I'll get into a beaver suit and parachute into Idaho*! Here's a link to the article that mentions it, along with the YouTube video link:

http://arstechnica.com/science/2015/10/newly-discovered-1950s-film-shows-idaho-fish-and-games-parachuting-beavers/

Please, please, please riff this for us! :)

(*: no, not really)