Seven C-5 Galaxys—assigned to wings at Westover ARB, Massachusetts; Dover AFB, Delaware; Memphis, Tennessee; and Travis AFB, California—line up at Naval Station Rota, Spain, in mid April where they were diverted because airborne ash from an erupting volcano in Iceland made flight impossible. Naval Station Rota and nearby Moron AB absorbed many US military flights diverted from Northern European routes because of the ash. The number of daily flights arriving at Rota, typically eight to thirteen, doubled over the weekend of 17–18 April. Moron AB, which averages one or two flights a day, saw a tenfold increase in traffic because of the ash.