Petty Officers 2nd Class Billy Lemos and Sarah Jacobs, marine science technicians at Coast Guard Marine Safety Unit Portland, discuss a minor fuel leak in the engine room of the vessel Morning Catherine during a Port State Control exam at Port of Portland, Ore., May 1, 2017.
MSTs examine foreign cargo vessels that have come to the U.S., and identify potential fire or pollution hazards in order to prevent fires or environmental contamination.