A helicopter flight refers to a mode of transportation in which an aircraft takes off and lands vertically, using rotors instead of wheels. Helicopters are capable of hovering in one spot or flying forward, backward, left, right, up, or down. They can also fly at low speeds and make sudden changes in direction, making them useful for a variety of purposes such as search and rescue operations, medical evacuations, law enforcement, firefighting, and military missions. A helicopter flight is often used to describe a trip taken by helicopter or the act of flying a helicopter itself.