The coveted U.S. Navy award recognizes military installations that excel at promoting warfighter readiness and supporting combat capabilities.

Over a span of 18 months, Wei sent photos and videos of the Essex, advised on the location of various ships and shared information on the Essex’s weapons.

Almost half of the fatalities resulted from off-duty motorcycle incidents, according to data from the Naval Safety Command.

The strikes follow last month’s ambush that killed two U.S. soldiers and one American civilian interpreter in Syria.