The official caption:
Firefighters, background, drive ponies across Assateague Channel during the 77th annual Pony Swim to the Island of Chincoteague, Va., Wednesday, July 24, 2002. About 150 wild ponies hit the water at Assateague Island and swam across a channel in an annual tradition made famous by Marguerite Henry's 1947 novel "Misty of Chincoteague." The firefighters, also known as "Saltwater Cowboys," care for the animals all year long. Some of the ponies will be auctioned Thursday to raise money for the fire department.
Nice Thursday image? I could have saved it for tomorrow but it's just too good.