NSA Head Plays on Fears to Justify Spying to Congress

NSA Director General Keith Alexander seems to think the only thing standing between the U.S. people and terrorist onslaught is secret spying.

Or at least that's what he told congress in a hearing on Tuesday.

As he shared a panel with top FBI and Justice Department officials, Alexander vigorously defended the agency's spying programs, insisting that controversial secret surveillance has warded off over 50 terrorist attacks internationally and ten within the United States.