First Lady Michelle Obama hugs Marianna Cardenaz during the 146th Memorial Day Observance at Arlington National Cemetery May 26, 2014. Cardenaz became involved with the Tragedy Assistance Program for Survivors after her father, Army Staff Sgt. Michael Cardenaz was killed in combat in Kunar, Afganistan, February 20, 2010. U.S. Coast Guard photo by Petty Officer 2nd Class Patrick Kelley.