** FILE ** Veteran Affairs Secretary Jim Nicholson, holds up a 60 gigabyte portable hard drive as he demonstrates how easy data can be stored, while testifying on Capitol Hill in Washington in this June 8, 2006 file photo. Nicholson, who was forced to defend the Bush administration's handling of people injured in battle after revelations of shoddy health care at Walter Reed Army Medical Center, announced Tuesday, July 17, 2007, that he is resigning. (AP Photo/Pablo Martinez Monsivais, File)