30 , April 5 - 25 , May 2 - 8 , and May 10 - 31 , 1976 . The deck logs do not document a no - notice collision alert drill during a combat patrol . " A copy of the ship ' s deck log sheet reflects that on May 7 , [ 1976 ] ( three weeks after the Veteran ' s alleged drill ) , the Veteran had a 1 / 4 inch by 1 / 8 th inch laceration in his forehead . The prognosis was good and the treatment was a bandage and return to duty . The deck log is negative for any loss of consciousness . The earliest clinical evidence of an acquired psychiatric disability is more than twenty