The RQ-21 is also well suited to those types of sites since it uses a catapult to launch the unmanned aircraft and a tethered hook to snatch it out of the sky at the end of its mission. Unlike similarly sized drones, such as the RQ-7, the Blackjack has no need for an actual runway of any kind. The complete system, which consists of five RQ-21s, a launcher, a Skyhook Recovery System, two trailer-mounted generators, and four Humvees with various other necessary components and pieces of equipment, is relatively mobile, as well. Marines
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