sentences:  AWSTS assumed all functions of a Fleet Replacement Squadron (FRS) with the exception that HM-14 was assigned responsibility to provide and maintain the aircraft, and augment AWSTS with flight instructors when required.As the MH-53E FRS, AWSTS provides flight and ground training to student pilots and aircrew through all phases of their Chief of Naval Operations approved syllabus.Prospective HM pilots and aircrew are detailed to AWSTS for over 20 weeks of intensive, computer based MH-53E systems, pre-flight, simulator, and basic flight training.