The president of the National D-Day Memorial foundation says it may be forced to close the memorial.

William McIntosh said Thursday the memorial needs an infusion of cash or a new owner.

He says the memorial's big problem is a lack of donations, due to the economy. The memorial gets about $600,000 a year from visitors, but counts on donations for another $1.6 million annually.

The memorial honors the Allied invasion of Nazi-occupied France during World War II. The invasion was the largest land, air and sea operation in military history.