Four-year-old Liberty Bank of Clearwater takes on another patriotic name Thursday. Liberty will start operating as a branch of fellow bay-area based USAmeriBank with the completion of their merger. Combined, the banks have assets of $530-million and five offices in Pinellas and Hillsborough counties. USAmeriBank of Tampa is run by Joseph Chillura. Liberty Bank CEO and longtime area banker David Stone becomes an executive vice president of USAmeriBank.