Glossary

Beyond Visual Line Of Sight — flying a drone farther than you can see with your own eyes (requires special permission).

Force that resists motion through air.

Electronic speed controller — controls each motor.

Federal Aviation Administration — the U.S. government agency that regulates flight, including drones.

Automatic protective behavior.

The body that holds everything together.

Geographic information systems.

Constant downward pull.

Sudden, brief increase in wind.

Steady flight at one position.