Question for Air Force about Military transport aircraft?

Today I was at an Air Force base and heard some very large window-less aircraft taking off. They were extremely loud (Louder than commercial aircraft), and had a very distinct buzzing/humming sound coming from the turbines. This sound was very unusual. What kind of aircraft is this?

Also, what causes this sound?

Anonymous2008-10-07T22:39:39Z

Favorite Answer

Military aircraft do not have the noise restrictions that commercial aircraft do. That is the sound of REAL power. It could have been one of these.

Anonymous2016-04-09T04:46:28Z

How can Ireland claim 2b a neutral country when its allowing its airspace and airports 2b used by US military planes transporting troops and weapons.I am sure someone in the govt is getting a backhander.

Anonymous2008-10-07T22:44:36Z

C-5
C-17
C-141

too little information to speculate further