I just saw a post with someone questioning the usefulness of an Amber alert 400 km away from where a vehicle was spotted¹ and wondered if the alert itself would indiscriminately be sent to every phone in a target region, and if that would include the phone of the person of interest, which would seem counterproductive at best.

¹ I pointed out that the car might be known to travel to that region, even if it was last seen 400 km away.