Brain injuries remain unpredictable. The diagnosis of a brain injury or concussion may not be straightforward. Also, diagnosis may be complex. It can include use of neuroimaging or cognitive testing, and the cognitive testing can take several hours to complete.
The National Transportation Safety Board released an accident report concerning an airplane crash in Arizona that killed a father and his three sons. While a variety of factors were said to have contributed to the 2011 aviation accident, the errors were said to be related to a culture of "complacency" that took place among ownership of the company that operated the airplane.
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