U.S. Marines stand guard during a simulated civilian evacuation at the National Gendarmerie Tactical Training Center in Saint-Astier, France, Oct. 9. The exercise marks the third rotation of Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa Marines training alongside the Gendarmerie. - U.S. Marines stand guard during a simulated civilian evacuation at the National Gendarmerie Tactical Training Center in Saint-Astier, France, Oct. 9. The exercise marks the third rotation of Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa Marines training alongside the Gendarmerie.