National Geographic : 1944 Jan
Staff Photographer Edwin L.Wisherd Like Broncobusters, Marines Drive Their Bucking Amphibians out to Sea and Back Again Used for landing men or supplies, these monster, tanklike tractors can swim, wallow through muddy swamps, knock down small trees, and climb steep banks. Leaving their base at Dunedin, west Florida, this fleet took the author to "invade" small brushy islesthat lay offshore. U. S.Navy, Official "Walking the Dog" Is Pleasant Duty for Florida Coast Guardsmen This daytime stroll is only for exercise. At night only one dog accompanies the sentry. Having far keener sense of hearing and smell than humans possess, the trained dogs are most useful in detecting attempted landings by enemies.