A Twin Otter Flies Out of the South Pole (IMAGE) U.S. National Science Foundation Caption In this 2003 photo, a Twin Otter flies out of the South Pole on a previous medical flight. Credit Photo by Jason Medley, NSF Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.