Background setup: US sponsored NATO War games off the Atlantic coast. A small pleasure boat, painted to look militarily official in the waters near but not in the "no-go zone"; easily mistakable for either adventure-seekers or observers. Due to the time of day and the presence of the Coast Guard, not many witnesses around.
Scenario: A (CIA sponsored?) weapons sale to an international representative (Hamas? Isreal?, Iran?, doesitmatter?). Weapon being considered - high-tech, shoulder-fired missile. The seller points out and tells the buyer to try it out on one of the many target drones flying around. The buyer, being of low moral capacity aims it at an out-bound passenger plane and pulls the trigger.
If it ain't true, it would make good TV/cinema!