Cuts made by the Trump administration are threatening the function of a tiny but crucial office within the National Oceanic and Atmospheric Administration that maintains the US’s framework of spatial information: latitudes, longitudes, vertical measurements like elevation, and even measurements of Earth’s gravitational field. As the world turns more and more toward operations that need precise coordinate systems like the ones NGS provides, the science that underpins this office’s activities, these experts say, is becoming even more crucial. The work of NGS, says Tim Burch, the executive director of the National Society of Professional Surveyors, “is kind of like oxygen. NGS was formed in 1807 by Thomas Jefferson, the son of a surveyor and cartographer. NGS also maintains and operates more than 1,700 federally owned satellite receivers across the US, which provide publicly available geospatial information.