There are many types of today. These are being further improved to suit times.
Helicopter can do many things. It can take off and on a small plot of ground. It can 'stand still' in the air. Other aircrafts cannot do this.
A helicopter pilot's work is very . He may the sailors from a ship and he may carry a sick person from an island to a hospital.
Helicopters can also carry . When they carry them outside, it hangs down from the helicopter. When a building is on fire and there are some people on the roof, the aircraft can the people off the roof.