ANDREWS AIR FORCE BASE, Md. -- Alicia Patterson portrays an elderly woman, giving guidance to Christine Washington, 12, in dealing with the hardships of slavery prior to their emancipation. Juneteenth, also known as Emancipation Day or Freedom Day, is the oldest known celebration commemorating the ending of slavery in the United States, dating back to June 19, 1865. (U.S. Air Force photo by Bobby Jones)