The soviet one of the heaviest mi6 helicopters in the worldThe Soviet one of the heaviest Mi6 helicopters in the world
One of the types in aviation is the su-25 attack aircraftOne of the types in aviation is the su-25 attack aircraft
Airplanes are one of the main weapons of the countryAirplanes are one of the main weapons of the country
Skyscrapers of los angeles, one of the largest american citiesSkyscrapers of Los Angeles, one of the largest American cities