American military transport helicopter ch-47 chinookAmerican military transport helicopter ch-47 Chinook
The refueller refuels two helicopters in the air at the same timeThe refueller refuels two helicopters in the air at the same time
In the night sky over the ocean, a helicopter lands on the platform of an aircraft carrierIn the night sky over the ocean, a helicopter lands on the platform of an aircraft carrier
Unmanned aerial helicopter with real-time video shootingUnmanned aerial helicopter with real-time video shooting