"Ground crew loading supplies into the bomb bay of an Avro Lancaster of No. 514 Squadron RAF at Waterbeach, Cambridgeshire, during Operation 'Manna', the dropping of food to the starving Dutch population, 29 April 1945." Operation MANNA: the air movement of food and supplies to the Dutch populace. Ground crew prepare to load sacks of food into the bomb-bay of an Avro Lancaster of No. 514 Squadron RAF at Waterbeach, Cambridgeshire.