University of Idaho Coeur d'Alene undergraduate researcher Sam Freitas runs through her checklist on her laptop before lowering a submersible drone into Lake Coeur d'Alene. Both Freitas and graduate researcher Adrian Beehner have spent more than 1,000 hours working to program artificial intelligence into the submersible drone "Catfish." (LOREN BENOIT/Press)

July 27, 2018