Transportation security chief resigns

John Magaw has left his position as head of the U.S. Transportation Security Administration, which was created in response to the Sept. 11 attacks.

No official reason was given for his departure, but Magaw submitted a letter of resignation citing poor health.
Magaw is a former Secret Service agent who protected U.S. President Bush’s father.

Magaw will be replaced by Admiral James Loy, recently retired as commandant of the Coast Guard and then named deputy undersecretary for transportation security.