Coast Guard Chief Petty Officer Randall Keller, a National Association of Boating Law Administrator’s boating operator search and rescue course instructor, teaches Naples, Florida, area marine emergency responders how to calculate nautical time, speed and distance in Naples, Wednesday, March 22, 2017. Local responders were taught search patterns, boat operator terminology and basic maritime search-and-rescue operations during the course. (U.S. Coast Guard video by Petty Officer 2nd Class Ashley J. Johnson)