The Marine Corps MOS 7011 is for Expeditionary Airfield Systems Technicians. These technicians design, install, operate, inspect, maintain, and repair expeditionary airfield systems. These systems include:
Arresting gear systems
Visual landing aids
Airfield lighting and marking systems
Airfield surfacing systems
Expeditionary airfield systems technicians also:
Provide expeditionary lighting systems for Marine Expeditionary Units (MEUs)
Conduct Tactical/Assault Landing Zone Surveys for Naval and Marine Corps Tactical Aircraft
Other MOS codes in the airfield services field include:
7041 Aviation Operations Specialist
7051 Aircraft Rescue and Firefighting Specialist
7077 Weapons and Tactics