Don Liberatore has more than 35 years of experience in manned and unmanned submersible operations as a diver-medic, mixed gas lock-out diver, hyperbaric chamber operator, and Chief Submersible Pilot for Harbor Branch Oceanographic Institution’s Johnson-Sea-Link (JSL) I & II research submersibles. He has logged nearly 1800 dives as a pilot, hundreds more as a pilot-trainer and over 200 as a mixed gas lock-out diver to 350 ft. In addition to science missions, he has participated in recovery operations as Submersible Operations Coordinator. These include the search and recovery of the Space Shuttle CHALLENGER, excavation and documentation of the U.S.S. MONITOR, documentation of the wreck of the S.S. EDMUND FITZGERALD, and the search for the wreckage of Amelia Earhart’s plane in the central Pacific Ocean using two REMUS 6000 m AUVs. He has worked as crew member and/or project manager for the Kraken (UCONN), Mohawk (UNCW) and Global Explorer (DSSI/Oceaneering Int.) ROVs. He participated as a D2 crew member during Leg 3 of the Okeanos Explorer Mariana Trench expedition.