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FIRST ON FOX: Leaders on the House Oversight Committee are pressing the Navy for answers on the prevalence of traumatic brain injuries among aviators and flight officers, accusing the service of failing to fully understand or address the psychological toll of flight operations.

In a new letter to Navy Secretary John Phelan, the lawmakers requested documents and data on brain injuries, cognitive dysfunction and mental health issues in the fleet, warning that the Navy has never conducted a comprehensive investigation into the risks facing pilots.

"The Committee is concerned that the Navy is failing to adequately understand or address the underlying causes of traumatic brain injuries, cognitive dysfunction, and mental health

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