 This capability was replaced by the Navy and Marine Corps Intranet (NMCI) in 2002.HM-15 maintains a trainer with a full size articulated mockup of the cabin and gear of an MH-53E for training Enlisted Aircrew in the roles of mine countermeasures and operational procedures.It is a fairly significant "stage", looking reminiscent of a huge theme park reality ride, and a brand new building was constructed to house both it and the Squadron Training Department.