America's invisible shield. How does NORAD work today?

Drones, cyber attacks, rockets — NORAD has been defending North America for almost 70 years, and the threat image is changing faster than always before. Dr. Aleksander Olech talks about the changing safety environment, fresh technologies and transatlantic relations with Tamir Waser, the elder abroad policy advisor of the United States (POLAD) in NORAD and USNORTHCOM.