On August 26 1914 ,General "Blackjack" John Pershing hosted Mexican Constitutionalist Generals Pancho Villa and Alvaro Obregon. They met on a Rio Grande bridge, after which Pershing escorted his guests to a review at Fort Bliss, then to socialize at his home. This well-known photo of Obregon, Villa and Pershing was taken while they were on the bridge at Nogales, Arizona. Behind Pershing and to his left stands 1st Lt. George S. Patton, Jr. who served as one of Pershing's aides. A second officer, standing behind Patton, has been identified as 1st Lt. James Collins, aide-de-camp (personal assistant) to Pershing. He went on to become a Major General. His youngest son, Michael, became an astronaut. Michael Collins piloted the Apollo 11 command module during the first moon landing on 20 July, 1969.