** FILE ** This is an undated file photo of the electric chair at the Tennessee State prison in Nashville. First used by New York State in 1890, it was used throughout the 20th century to execute hundreds and is still an option in eight states. (AP Photo, File)
Tennessee Titans head coach Ken Whisenhunt watches his players during an NFL football minicamp workout on Tuesday, April 29, 2014, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Jake Locker throws a pass during an NFL football minicamp workout on Tuesday, April 29, 2014, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Jake Locker warms up during an NFL football minicamp workout on Tuesday, April 29, 2014, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans head coach Ken Whisenhunt, second from right, watches quarterbacks Jake Locker (10) and Charlie Whitehurst (12) during an NFL football minicamp workout on Tuesday, April 29, 2014, in Nashville, Tenn. (AP Photo/Mark Zaleski)