Isaac becomes Category 1 hurricane near Gulf Coast - Article Photos 36/70

Workers move horses into trailers at the Fair Grounds Race Course & Slots, after a mandatory evacuation of the animals was issued by the track, in preparation for Tropical Storm Isaac, which is expected to become a hurricane as it moves into the Gulf of Mexico, in New Orleans, Sunday, Aug. 26, 2012. (AP Photo/Gerald Herbert) ORG XMIT: LAGH101