The Rotorpack is another option in the field of one-man vehicles available in the Frontier. Small, agile, fairly energy efficient, and useful for scouting and patrol operations; they were originally designed for the military/security market. Unarmed versions have become popular in the civilian world as well. Some exploration teams prefer rotorpacks to jetpacks or glijets because they offer greater speed and range than either, and are fairly easy to operate, even by untrained pilots (+15% to any Piloting check). Rotorpacks can increase or decrease their altitude by 20 meters a turn.