Killion is chief scientist and deputy assistant secretary for research and technology of the U.S. Army.

FORBES: Magazine Article

Killefer served as assistant secretary for management and chief financial officer of the Treasury Department during the Clinton administration.

CNN: Tax issues prompt Obama nominee to withdraw

But as John Byerly, U.S. Deputy Assistant Secretary of State for Transportation Affairs and chief negotiator for Open Skies, explains to CNN, this is a red herring in terms of importance in aviation law.

CNN: Open Skies: the bell rings for round two

From June 2005 to June 2006, he served as Special Assistant (for Values and Vision) to the Secretary and Chief-of-Staff of the U.S. Air Force, with the equivalent military rank of Brigadier General.

WHITEHOUSE: The White House