English: Residents of Palmer Station, Antarctica, used their bright red United States Antarctic Program parkas to send ground-to-air greeting to scientists and flight crew aboard NASA's DC-8 flying science laboratory as it flew over the station during Operation Ice Bridge. Operation Ice Bridge is a study of Antarctic ice sheets, sea ice and glacial recession. One of three U.S. environmental research stations on the continent, Palmer Station is located on Anvers Island halfway down the Antarctic Peninsula.