Two Florida sailors experienced something very unusual during their boating competition in Argentina.
Luke and Chase were part of a group of about 200 kids who were sailing when a submarine came out of nowhere.
"First thing I thought was, what is it doing here?" Luke said.
The submarine could have harmed the young sailors, but they seemed more concerned about it ruining their race.
The duo train in Fort Lauderdale. Their coach said they've practiced for dangerous situations, and know what to do if their boat ever capsized.
As for the mysterious submarine, according to several reports, the National Ministry of Defense and Argentina's Coast Guard are investigating.