Firing drills during UNITAS 2017 exercise at Ancon, Peru 30 July 2017 Firing drills during annual, multinational UNITAS 2017 exercise at Ancon, Peru. Photo: Lance Cpl. Taylor Cooper/USMC Photo: Lance Cpl. Taylor Cooper/USMC Photo: Lance Cpl. Taylor Cooper/USMC Photo: Lance Cpl. Taylor Cooper/USMC Photo: Lance Cpl. Taylor Cooper/USMC Photo: Lance Cpl. Taylor Cooper/USMC