This bill establishes the Base Gagetown Training Registry within the Department of Defense, Veterans and Emergency Management, Maine Bureau of Veterans' Services to collect and maintain data related to military service and health conditions from individuals who voluntarily provide such data and who have trained at the Canadian military support base in Gagetown, New Brunswick. The bill also reestablishes the Gagetown Harmful Chemical Study Commission and requires the study commission to request certain information it determines necessary from the United States Department of Defense and other federal agencies to provide medical testing for individuals identified through information received pursuant to the requests as necessary to complete its study.