What safety feature is often included in modern helmets used by aircrew?

Modern helmets designed for aircrew often come equipped with integrated communication systems, which serve a crucial role in ensuring effective communication between crew members and with ground control or other aircraft during flight operations. These communication systems can include built-in radio technology, headsets, and microphones that allow clear audio transmission while maintaining the helmet's protective qualities.

Such integration enhances situational awareness and can be vital for the coordination of complex maneuvers or emergency situations, making it a significant feature in modern aviation safety.

While other options like enhanced visibility, cushioned lining, and detachable visors also contribute to the overall functionality and safety of helmets, the integrated communication system differentiates the modern design by addressing the unique needs of aircrew operations.