D.C. is entering the final preparations for Saturday’s military parade in honor of the Army’s 250th Birthday. Saturday's parade in D.C. features 40 military helicopters, including Blackhawks ...

Here are 10 of the oldest helicopters still in use by the U.S. military. Read more: 10 Of The Fastest Civilian Helicopters, Ranked By Top Speed CH-53E Super Stallion/MH-53E Sea Dragon — 1986 ...