YEREVAN. – The Armenian Armed Forces peace keeping brigade conducted a three-day military exercise in the study center within the frameworks of the Operational Capabilities Concept for NATO on Tuesday.  The process of self-evaluation was conducted by the Armenian officials who received qualifications abroad and were accredited by the NATO. Besides, a consulting team comprised of the armed forces representatives of the NATO member-states supported the Armenian officials. Six hundred servicemen and several Armenian Air Force helicopters participated in the exercises.