MQ-8B Fire Scout operating off USS Simpson (FFG-56) was ditched at sea upon returning from a maritime surveillance mission in support of Africa Partnership Station. The air vehicle was unable to achieve UAS Common Automated Recovery System (UCARS) lock on, a requirement for landing aboard a ship at sea. After multiple approaches and exhaustive troubleshooting by operators, the aircraft was positioned a safe distance from USS Simpson and the flight was terminated. Subsequently, Simpson crew performed a nighttime recovery of the aircraft.