I agree that they haven&#x27;t &quot;taken off,&quot; but we do still have them: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bell_Boeing_V-22_Osprey" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bell_Boeing_V-22_Osprey</a><p>Helicopters are expensive to operate and maintain. It&#x27;s hard to keep something hovering.