Just like a UAV in COD a pork beacon is a homosexual radar often used to find,located and destroy other types of pork. It is often used in social gatherings to hunt out other pork pie eating mincers. When swimming a pork beacon resembles a floating turd that's been slightly discolored with a hint of blood.
Look at Jarrod the little pork beacon, what do you think he is hunting today ? bacon or sausage.. there must be a strong waft of poo & lube in the air today