High Quality Content by WIKIPEDIA articles! David Alexander Johnston (December 18, 1949 – May 18, 1980) was an American volcanologist with the United States Geological Survey (USGS) who was killed by the 1980 eruption of Mount St. Helens in Washington. One of the principal scientists on the monitoring team, Johnston died while manning an observation post about 6 miles (10 km) from the volcano on the morning of May 18, 1980. He was the first to report the eruption, transmitting the message "Vancouver! Vancouver! This is it!" before being swept away by the lateral blast created by the collapse of the mountain`s north flank. Though Johnston`s remains have never been found, remnants of his USGS trailer were found by state highway workers in 1993.