Navy Lt. Cmdr. Shannon Stout, the 2nd Tank Battalion medical officer, from Sarasota, Fla., returns a salute after her promotion ceremony Sept. 4, 2013 aboard Marine Corps Base Camp Lejeune. Stout became the first female field grade officer in 2nd Tanks history. - Navy Lt. Cmdr. Shannon Stout, the 2nd Tank Battalion medical officer, from Sarasota, Fla., returns a salute after her promotion ceremony Sept. 4, 2013 aboard Marine Corps Base Camp Lejeune. Stout became the first female field grade officer in 2nd Tanks history.