In heraldry, supporters are figures usually placed on either side of the shield and depicted holding it up. These figures may be real or imaginary animals, human figures, and in rare cases plants or inanimate objects. Often these can have local significance, such as the fisherman and the tin miner granted to Cornwall County Council, or a historical link, such as the lion of England and unicorn of Scotland in the two variations of the Coat of Arms of the United Kingdom. The arms of nutritionist John Boyd-Orr use two garbs (wheat sheaves) as supporters; the arms of the USS Donald Cook, missiles; the arms of the state of Rio Grande do Norte in Brazil, trees. Letters of the alphabet are used as supporters in the arms of Valencia, Spain.