The aircraft is the venerable C-130 Hercules cargo plane. We see quite a lot of these planes here because the New York Air National Guard 109th Airlift wing operates from an air base right across the river in Scotia. The 109th has a very unique mission. They help support and supply the scientific research teams in the Antarctic as well as missions to Greenland. They have a special model of the Hercules that has skis installed as well as wheels! Unfortunately, the one plane I managed to capture on film doesn't have them.
A very interesting plane and a very interesting mission.