ویدیوی رایگان Helicopters - and why they're important را تماشا کنید

Despite often being expensive, high maintenance and tricky to operate, armed forces know they need helicopters. Whether it's getting troops in, or the wounded out, helicopters are often the 'go to' choice. NATO Review looks at nations' ongoing need for helicopters -- and what they're doing to make it easier to use them together.