Mark V. Rosenker was the 11th Chairman of the National Transportation Safety Board (NTSB) and led the agency, either as Chairman or Acting Chairman, from March 2005 until August 2009 when he left office to return to private life. He was first nominated to the Board by President Bush in January 2003 and unanimously confirmed three times by the United States Senate to be a Member, Vice Chairman or Chairman of the Board over his tenure.
From early 2001 until the announcement of his nomination to the Board, Rosenker served as Deputy Assistant to the President and Director of the White House Military Office. In this capacity, he had responsibility for policies, personnel and plans that involved Department of Defense assets in direct support of the President and Vice President. He was with President Bush on 11 September 2001.
Rosenker was the Board Member on scene for more than a dozen major NTSB investigations, and has chaired a number of NTSB public hearings. These included the crash of a Colgan regional airliner near Buffalo, New York in February 2009 that killed 50 people. This was the last fatal domestic commercial airplane accident that occurred in the US.
Today Rosenker is a consultant to CBS News and appears regularly on both TV and radio to discuss transportation safety issues. He is also President of the Transportation Safety Group LLC, a specialised consulting company, and serves on a number of corporate boards.