*[Passengers injured as US fighter jet comes close to Iranian plane][1]*

> The Iranian plane, belonging to Mahan Air, was heading from Tehran to Beirut on Thursday when the pilot staged a safety manoeuver, in an incident that Iran's Foreign Ministry said would be investigated. ... Central Command spokesman, said the F-15 "conducted a *standard visual inspection* of a Mahan Air passenger airliner at a safe distance of about 1,000 metres (3,280 feet) from the airliner this evening". "The visual inspection occurred to ensure the safety of coalition personnel at Tanf garrison," ... "Once the F-15 pilot identified the aircraft as a Mahan Air passenger plane, the F-15 safely opened distance from the aircraft."

He added the intercept was carried out in accordance with international standards.

My questions are the following:
* Is there such thing as "standard visual inspection" at all? Is it normal in such circumstances? What's its purpose and how necessary is it?
* Isn't there any other method to this end, instead of "visual inspection"?
* Is "1,000 metres" distance considered "safe" for such conditions?
* In what conditions do passenger airliners stage a "safety manoeuver" like this?

  [1]: https://www.aljazeera.com/news/2020/07/fighter-jet-approaches-iranian-passenger-plane-syria-200724024141294.html