The Navy Memorial’s trio of 2013 Lone Sailor awardees have worn the uniforms of the Navy, the Marines, the Coast Guard … and even the Atlanta Braves. General Motors CEO Dan Akerson (Naval Academy Class of 1970), retired Marine Corps Gen. P.X. Kelley and Ted Turner, who served in the Coast Guard briefly before creating a media empire, will be honored by the organization at a Sept. 18 dinner in Washington, D.C. The award goes to “sea service veterans who have excelled with distinction in their respective civilian careers while exemplifying the Navy’s core values of honor, courage and commitment,” according…