From left, Dayea Maya and Roberto Melendez board up their business on Bourbon Street as Isaac heads toward New Orleans, Tuesday, Aug. 28, 2012. The U.S. National Hurricane Center in Miami said Isaac became a Category 1 hurricane Tuesday with winds of 75 mph. It could get stronger by the time it&#39;s expected to reach the swampy coast of southeast Louisiana.    <span class=meta>(AP Photo&#47; CHERYL GERBER)</span>