 ERAST also has focused on development of new miniaturized sensor and avionics systems for the UAVs and for NASA's Lockheed ER-2.The General Atomics ALTUS II is a civilian variant of the MQ-1 Predator UAV designed for scientific research missions.One of the two ALTUS aircraft, ALTUS II, was built under the ERAST program and has participated in a number of the related research missions.