[tgsovlerkhgsel]

International intercept procedures are that one of the intercepting aircraft flies next to the intercepted aircraft.

https://www.faa.gov/news/safety_briefing/2015/media/intercep...

Of course, they could also intercept from a bigger distance or threaten the plane with surface to air missiles and no jets at all.

Intercepting from a bigger distance has the downside that the pilot cannot see the fighters except on electronic displays, all of which have zero security (just like the radio used to communicate with ATC). I wonder how long until someone "intercepts" an aircraft with an SDR and a directional antenna.