WASHINGTON (AP) — Hillary Rodham Clinton emailed her staff on an iPad as well as a BlackBerry while secretary of state, despite her explanation she exclusively used a personal email address on a homebrew server so that she could carry a single device, according to documents obtained by The Associated Press. The State Department released a total of four emails between Clinton and her top advisers as part of a Freedom of Information Act request filed in 2013 by the AP, which sought Clinton's correspondence with senior advisers over a four-year period relating to drone strikes overseas and U.S.