What was the military rationale for General Nimitz to order the sinking of the cranberry shipment to Guam in 1944?

by eggmaker
keloyd

Also, please elaborate with links/details giving a little more background? My granddad was an engineer who served in Guam with the Navy SeaBee's. None of his stories about the war mentioned cranberries. Google was a swing and a miss on this point.