My first season I went out to the Polar Plateau (The Great White Expanse) for 3 weeks with a science crew of two who were working on the Automated Geophysical Sites. Four or 5 of these sites are spread across the continent and, in theory, continuously gather data such as cosmic radiation and other astrophysics (and more I"m sure) that gets sent back to universities in the US. The temperatures in particular are very hard on the instruments housed in the 8x16' hut which also serves as bunk room and kitchen for those onsite (although I lived in that yellow Scott tent instead).
My job was more medical back-up than immediate safety support as there wasn't much hazard at these sites other than extreme weather and altitude in the most remote places one might ever be.
Rick and Joe were installing wind power in addition to maintaining the equipment. I spent a lot of time digging out numerous emergency food and equipment caches (this represents a LOT of shoveling of very dense snow), inventorying and maintaining them, and helping Rick and Joe as needed. Three times a day I also called in detailed formal weather observations back to McMurdo. Field sites like these are a major source of forecasting data as there aren't many other ways to find out what's happening out on the continent.
A couple times I hiked out of sight of the camp, such that I had a 360 degree view of absolutely nothing other than snow, a flat distant skyline, shadows cast by the wind carved snow, and the sky. As you can imagine, this was quite an unusual experience (and I made damn sure I knew which way was home! In the firm snow, my tracks were frequently almost invisible).