The incident, which took place during the early hours of last Thursday morning, was only made public last night.
The Tupolev T1-95 bombers were escorted by two F-16s though they never entered Portugal’s sovereign air space.
The incident caused additional alarm among national authorities as the bombers do not emit any signals nor do they respond to radio transmissions, which it said could pose serious risks to civil aviation.
You can actually hear these Bear bombers from hundreds of miles away. They can sneak up on you.
By Dave Barnes from USA on 23 Nov 2016, 23:56