NEXRAD, or next-generation radars, have been built at, or are planned for, more than 150 locations nationwide. Of these, 116 will be operated by the NWS, 14 by the Federal Aviation Administration (FAA) and 26-30 by the U.S. Air Force, according to Lori Arguelles, a spokeswoman for the National Oceanic and Atmospheric Administration (NOAA), the parent agency of the NWS, in Washington.