Mi-28 military helicopters from the Berkuti (Golden Eagles) aerobatics team performing yesterday, the opening day of the International Military-Technical Forum "Army-2015" event held at the Russian Armed Forces' Patriot Park in Kubinka, outside Moscow.
Hundreds of Russian defence companies and weapon manufacturers are taking part in the four-day event, displaying an estimated 5,000 pieces of weaponry and military equipment, ranging from helicopters and fighter jets to tanks and small arms.
