NEW : Civil liberties group files suit against Napolitano , Pistole . NEW : Pistole praises performance of airport employees , pleads with them to continue with screeners . Rep. Mike Mica sent a letter to aviation authorities discussing airport privatization . should you move forward with your decision to opt to have a certified private screening program at your airport , '' he said . A public interest advocacy group said it is suing DHS over scanner failures .
NEW : Civil liberties group files suit against Napolitano , Pistole . NEW : Pistole praises performance of airport employees , pleads with them to continue with screeners . Rep. Mike Mica sent a letter to aviation authorities discussing airport privatization . A public interest advocacy group said it is suing DHS over scanner failures .