Helicopter landing. early in the morning, the plane is already ready to respond toHelicopter landing. Early in the morning, the plane is already ready to respond to
A pair of military helicopters flying over the groundA pair of military helicopters flying over the ground
American military transport helicopter ch-47 chinookAmerican military transport helicopter ch-47 Chinook
Soviet single-engine aircraft flying in the cloudsSoviet single-engine aircraft flying in the clouds