The US has shot down 3 suspicious flying objects in 3 days. Here's what we know about the UAP floating over North America.

• US fighter aircraft shot down an object threatening airspace over Alaska on Friday.
• F-22 pilots who saw the object said it "interfered with their sensors" and had no propulsion system.
• On Saturday and Sunday, additional objects were shot down over Canada and near the US border.

A week after shooting down a suspected Chinese spy balloon that floated over the country, F-22 jets shot down an unidentified object threatening flights over Alaska on Friday. Reports offer conflicting details about the object's capabilities and origin, and US intelligence officials have released limited information about its design or intended purpose.