160305-N-ZZ999-075 WASHINGTON (March 5, 2016) An undated file photo of Master Chief Petty Officer of the Navy (MCPON) William “Bill” H. Plackett. Plackett, who became the Navy’s sixth MCPON on Oct. 1, 1985, died March 4, 2016, at the age of 78. (U.S. Navy photo/Released)