This June 22, 1972 photo shows the recently completed Governor's Mansion in Harrisburg, Pa., surrounded by flood waters from Hurricane Agnes after the Susquehanna River overflowed its banks. Hurricane Agnes blew across the Florida Panhandle 30 years ago and moved up the Atlantic coast, ravaging 12 states in its wake and resulting in about $3.1 billion in damage. It was the country's costliest disaster at the time.. (AP Photo/Paul Vathis, File)