Marv Langston, deputy assistant secretary of defense for C3I, announced today he is leaving the Defense Department, a move that comes two days after Deputy Defense Secretary John Hamre said he too would be leaving his post. Langston told InsideDefense.com after a roundtable luncheon in Arlington, VA, sponsored by the Precision Strike Association, that he will become chief operating officer of Salus Media. Salus Media is an internet health and lifestyle company, based in California, which is expected to offer...