The Navy has deemed a theoretical "MH-53K King Dragon" helicopter as "not practical," estimating procuring such a platform could cost up to $7.6 billion in 2014 constant-year dollars for 48 aircraft, while developing and testing the aircraft could run $2.6 billion, according to documents viewed by Inside the Navy . Those cost estimates, calculated by CH-53K prime contractor Sikorsky, and the recommendation against pursuing the aircraft are included in a Nov. 9 letter to the Senate Armed Services Committee from...