ALT During the summer the station population is typically around 150. Most personnel leave by the middle of February, leaving a few dozen (39 in 2021) "winter-overs", mostly support staff plus a few scientists, who keep the station functional through the months of Antarctic night. The winter personnel are isolated between mid-February and late October. Wintering-over presents notorious dangers and stresses, as the station population is almost totally isolated. The station is completely self-sufficient during the winter, and powered by three generators running on JP-8 jet fuel. An annual tradition is a back-to-back-to-back viewing of The Thing from Another World (1951), The Thing (1982), and The Thing (2011) after the last flight has left for the winter.