When I was deployed to Iraq the one UAV/UAS system we used to operate with was the Pioneer UAV/UAS. Its official nomenclature was the RQ-2B.
It was a heavy unmanned plane and could be launched three different ways; rolling, pneumatic or by rocket assisted takeoff (RATO) which was my favorite. We had the privilege by our commanding officer to maintain proficiency in all three weekly. Wednesday was RATO day. It was the best day out of the week:-)