On Oct. 1, The Post ran a Page 1 story about a temporary Pentagon assignment given a retired Air Force officer by a defense contractor. On Oct. 14, the officer, Lt. Col. Charles Riechers, was found dead, apparently a suicide. On Oct. 17, the Air Force complained about the story. The suicide of someone featured in a critical story is first a family's tragedy but also a journalist's nightmare. The story's author, business investigative reporter Robert O'Harrow Jr., expressed deep sadness at Riechers's death and the family's loss. O'Harrow wrote that Riechers went to work for Commonwealth Research Institute, a...