Airline safety has increased nearly 100 percent in the last couple of decades. But the challenge isn't over. There's still a big gap in average safety among nations. Bacterial and viral disease increasingly fly first class around the world. And new modes of navigation make the whole system more vulnerable to cyber attacks. That's the gist of new research by the Mitre Corporation. Joining the Federal Drive with more, former Transportation Secretary Rodney Slate, and MITRE aviation chief Gregg Leone.