U.S. Marines with SPMAGTF Crisis Response – Africa march though tear gas during crowd and riot control technique practice techniques at the National Gendarmerie Training Center in St. Astier, France, Dec. 2, 2014. The exercise, which was conducted with the French Gendarmerie, allowed the Marines to gain greater knowledge of non-lethal tactics, techniques and procedures while enhancing interoperability with the French Gendarmerie and strengthening the U.S. partnership with France. (U.S. Marine Corps photo by Cpl Jeraco Jenkins/Released).