After liquid and laptop bans were put in place on planes in 2017, a new twist on a very dangerous threat has emerged. Terrorists are competing for supremacy in aviation terror attacks. Whether it's ISIS, AQAP or other up-and-coming terror groups, they all have master bomb makers and access to extensive knowledge bases that make the terrorist threat to airplanes -- specifically those flying to the U.S. -- more dangerous than ever. Peter Neffenger, former head of the Transportation Security Administration, tells Target USA that terrorist groups never sleep. There are more potential threats out there than ever before.