5th Air Naval Gunfire Liaison Company (5th ANGLICO) "Lightning from the Sky, Thunder from the Sea!" Expeditionary Units: III Marine Expeditionary Force The unit's mission is to provide Marine Air Ground Task Force commanders with close air support, fire support and act as forward observers. Teams, made up of primarily forward observers and field radio operators, go out with ground elements and set up forward observation posts. There they gather information and when the enemy moves into a certain area, ANGLICO members call in artillery, air support or naval gunfire.