Marine Corps Techniques Publication MCTP 3-20A (Formerly MCWP 3-21.2) Aviation Logistics 2 May 2016 establishes doctrine for planning and executing Marine aviation logistics (AVLOG). It provides the philosophy for employing Marine AVLOG in support of Marine Corps operations. Effective AVLOG is the force multiplier of the Marine air-ground task force's (MAGTF's) aviation combat element (ACE). Viable AVLOG support enables the ACE commander to maintain more capable forces in decisive operations longer. Marine AVLOG is an integral part of the MAGTF as it extends the ACE's operational reach and flexibility.