Older helicopters had noisy rotor blades, modern ones are very quiet.
Because rotors are noisy and helicopters isually fly close to ground
They fly helicopters.
Helicopters are about 200 feet
A group of helicopters.
Helicopters are machines, they can not grow.
yes, helicopters are dangerous
what are the grey helicopters for
A noisy noise annoys a noisy oyster.
The alliteration for helicopters could be higher helicopters or heavy helicopters
Yes, and not only as military equipment.- if it wasnt for helicopters, hundreds of thousands of people would not be alive today with things such as - Search and rescue helicopters Firefighting helicopters Air ambulances (medEvac) Coast guard helicopters the reality is that helicopters are vital in our modern world
No animals can eat helicopters.
Helicopters can land almost anywhere.