It is not a Falcon 20, I flew it, the horizontal stabilizer looks like a Gulfstream IV. Since they were landing there they probably landed long and couldn't stop. Usually the FO gets the empty legs so may have played into the crash. He was young and the captain gave him too much leeway on landing. Unfortunate but I have let new guys land a bit long too but at some point, I have said land now or go around. You want to help the new guys but there is a limit on how much you can help them without endangering your flight.