‘he would not be surprised if Mr. Woodring had resigned because he refused to give up the Armys secret bombsite. Mr. Nye produced no proof of this and Senator Barkley said the Chief of the Air Corps had told him that the bombsite is and will be kept a secret.’
What is this ‘secret bombsite’?
Norden Bombsight
http://en.wikipedia.org/wiki/Norden_bombsight
The reds in the Roosevelt administration wanted to give it to the British (which would have probably been the same as giving it to the Reds). Those that cared about American security wanted to keep it secret.