Explorers Visit Nazi Sub Off Texas Coast

For the past 10 days, Robert Ballard, the underwater explorer who discovered the Titanic, has been searching shipwrecks that U-boats left behind along our Gulf Coast. Historians say U-boats sank at least 50 American ships in the Gulf, one in the very mouth of the Mississippi River. Americans managed to sink only one U-boat in the Gulf of Mexico. And they’re a ghostly reminder of a time when Hitler’s navy came startlingly close to the shores of Texas. (http://www.wfaa.com/)