NSA NSA leaker Edward Snowden says he was trained as a spy . Williams traveled to Moscow , where Snowden fled to escape prosecution for leaking classified documents that detailed U.S. surveillance programs . He worked for the CIA , NSA and Defense Intelligence Agency , he tells NBC 's Brian Williams . Calling him a contractor is ' ` ` to come from the totality of my experience , '' he says . Snowden is in Russia to avoid prosecution in U.S. on espionage charges .
NSA NSA leaker Edward Snowden says he was trained as a spy . He worked for the CIA , NSA and Defense Intelligence Agency , he tells NBC 's Brian Williams . Calling him a contractor is ' ` ` to come from the totality of my experience , '' he says . Snowden is in Russia to avoid prosecution in U.S. on espionage charges .