Jed Allen, a U.S. Coast Guard contractor, prepares to cover a barracks window with plywood at the Coast Guard Aviation Training Center barracks in Mobile, Ala., Aug. 26, 2012, in anticipation of Tropical Storm Isaac. Isaac developed as a tropical storm over the Western Atlantic Ocean Aug. 21, 2012, affecting Puerto Rico, the Dominican Republic, Haiti and Cuba before making landfall on the Gulf Coast of the United States. (U.S. Coast Guard photo by Petty Officer 3rd Class Jonathan Lally)