A fjord in southern Greenland, as seen during Operation IceBridge’s last flight of the 2017 Arctic campaign, on May 12, 2017. This final full science flight, ICESat-2 South, was designed along the ground tracks of NASA’s upcoming Ice, Cloud, and land Elevation Satellite-2 (ICESat-2), to fill in a gap in altimetry coverage of central southern Greenland.