The Wikipedia article of the day for December 13, 2016 is Ike Altgens.
Ike Altgens (April 28, 1919 – December 12, 1995) was an American photojournalist, photo editor and field reporter for the Associated Press (AP) who took two photographs that circulated worldwide after the assassination of President John F. Kennedy (JFK). Altgens was 19 when he began his AP career, which was interrupted by military service during World War II. When his service time ended, he returned to Dallas, Texas, got married, and went back to work for the local AP bureau, eventually earning a position as a senior editor. He was on assignment for the AP when he captured two historic images on November 22, 1963. The second photo, showing First Lady Jacqueline Kennedy toward the rear of the presidential limousine and Secret Service agent Clint Hill on its bumper, was reproduced on the front pages of newspapers around the world. Within days, Altgens' preceding photo became controversial after people began to question whether it showed accused assassin Lee Harvey Oswald in the main doorway of the Texas School Book Depository as the gunshots were fired at JFK.