Which UAS can fly for a maximum of 6 hours?

The RQ-7B Shadow is designed for longer endurance missions, which allows it to fly for a maximum of up to 6 hours. This specific model benefits from advancements in technology and efficiency that enable it to extend its operational flight time compared to earlier versions and other unmanned systems. Enhanced fuel capacity and improved aerodynamics contribute to its ability to sustain longer missions, making it suitable for intelligence, surveillance, and reconnaissance tasks over extended periods.

In contrast, other options possess shorter flight durations due to either their design limitations or the mission profiles they serve. For example, while the RQ-7 Shadow and MQ-5B Hunter might have varying operational capabilities, they do not match the RQ-7B's endurance. The RQ-11 Raven is known for its portability and quick deployment, but it also has a shorter flight time that does not reach the 6-hour mark. Thus, the RQ-7B Shadow is the only UAS among the provided options that can achieve this specific duration of flight time.