What is meant by "resilient systems" in the context of Fighter Block 4?

The term "resilient systems" in the context of Fighter Block 4 specifically refers to systems designed to withstand and recover from cyber and electronic attacks. This concept is crucial for modern military operations, where adversaries frequently employ sophisticated cyber threats and electronic warfare techniques. Resilience in systems means that, regardless of the disturbances or attacks inflicted upon them, these systems can maintain operational capability and recover quickly to continue functioning effectively.

In a military setting, this resilience is vital as it helps ensure that fighter aircraft can continue to perform their missions even under hostile conditions. This goes beyond simply preventing damage; it encapsulates the ability to adapt, regenerate, and continue operations without significant downtimes.

Other options highlight different facets of defense capabilities, such as improving combat performance, offensive operations, or requiring constant human oversight, but they do not capture the comprehensive nature of resilience against cyber threats, which is central to the definition of resilient systems in Fighter Block 4.