As far as I can tell, that would be none.

The Corner on National Review Online MAGAW RESIGNS [Dave Kopel]
Transportation Security Administration head John Magaw has just resigned, due in part to MSNBC's exposure of failures and coverups at the TSA. The resignation offers President Bush an opportunity to demand of the TSA the same kind of accountability he is demanding of private corporations, and to appoint a leader who will improve security rather than build a bureaucracy.