jonathan vigliotti, cbs news, london. >> ninan: coming up next, puerto rico one year after hurricane maria. what happened to the hundreds of thousands who fled the devastation? >> ninan: one year ago this weekend, puerto rico was reeling in the immediate aftermath of hurricane maria. in the following months, an estimated 3,000 people would die from medical conditions that could not be treated in parts of the island where there was no electricity and running water. david begnau here when maria hit. tonight, he reports on the humanitarian crews the storm left in its wake. >> about 3100. >> reporter: mike byrne is one of fema's most seasoned leaders. he helped coordinate the responses to hurricanes sandy and harvey, and after maria, he was named the point man here. how much money has the federal government given to puerto rico? >> by the one-year anniversary it will be $14.2 billion that we will have spent, and that will just keep growing as time goes on. >> reporter: the governor wants about $100 billion. >> well, you don't need that $100 billion tomorrow. you need how much you can use