I offer my most sincere condolences to the family of Maj. Gen. David Wherley and his wife, Ann.  I had the pleasure, privilege and honor to work wtih Gen. Wherley during the research and writing of my book.  Wherley, former commander of the District of Columbia National Guard, and his wife, Ann, both 62, were killed Monday in the collision of two trains on the subway system of Washington, D.C. They were on their way back from Walter Reed where they were attending training to become counselors to Wounded Warriors.