RCN's warships based at CFB Halifax. Formerly a separate base known as CFB Shearwater, the airfield was realigned as part of CFB Halifax during the mid-1990s. 12 Wing, a Royal Canadian Air Force unit that reports to 1 Canadian Air Division, is the primary user of Shearwater Heliport and is headquartered there. DND properties that were formerly aligned to CFB Shearwater, such as the Hartlen Point Golf Course and the Shearwater Jetty, are now part of CFB Halifax. 12 Wing operates from two locations with four squadrons: Shearwater Heliport 406 Maritime Operational Training Squadron is an operational training squadron for training all maritime helicopter aircrew in the Canadian Forces. 423 Maritime Helicopter Squadron is an operational squadron at Shearwater Heliport which provides CH-148 Cyclone helicopters for Maritime Forces Atlantic warships. 12 Air Maintenance Squadron provides aircraft maintenance and engineering support to 12 Wing's operational squadrons. Helicopter Operational Evaluation and Test Facility (HOTEF) is responsible for researching and testing state-of-the-art equipment for the CH-148 Cyclone to enable crews to operate efficiently, ashore or while deployed. Patricia Bay Heliport 443 Maritime Helicopter Squadron is an operational squadron which provides CH-148 Cyclone helicopters for Maritime Forces Pacific warships. Royal Artillery Park Royal Artillery Park is a military park, which is part of CFB Halifax. In the far corner of the Royal Artillery Park, is a diminutive red brick building, the Cambridge Military Library. This building was the social and literary centre of military Halifax. The Library opened in 1817 at Grafton Street, as an alternative to the more notorious choices of city entertainment. It moved to its present location in Royal Artillery Park in 1886 and was renamed Cambridge Military Library in 1902. The library was funded in part from Customs receipts collected by the British Army during its occupation of the port of Castine, Maine, during the War of 1812. CFAD Bedford The Canadian Forces Ammunition Depot Bedford, informally referred to as the "Bedford Magazine", is a major Canadian Forces property occupying the entire northern shore of Bedford Basin. It houses all of the ordnance for MARLANT vessels and has a loading jetty and several nearby anchorages. HMCS Trinity HMCS Trinity is the organization housed at Stadacona which is tasked with maintaining MARLANT communications with vessels and other Canadian Forces and allied units, as well as developing strategic and tactical operational intelligence for unit commanders. HMCS Trinity operates two remote radio transmitter/receiver