The Altus-II UAV, shown here with gear down, is a high altitude variant of the Predator UAV. It is powered by a 4-cylinder, 4-cycle,liquid/air cooled Rotax engine. Equipped with a single stage of turbo-charging, the Altus-II is capable of 45,000 feet maximum altitude. When a second stage turbo charger is installed, Altus-II should reach 65,000 feet.