The folks from McChord Air Force Base provide the C-17 service to and from McMurdo. McChord is located in Tacoma Washington and the flight crews typically rotate through every few weeks. I didn't take this photo but it's one of my favorites I've seen of the C-17 on the Ice.
This is the sticker that the flight crew was selling on the plane headed south from Christchurch.
I like that they have a small drawing of Mount Rainier on their tail.