*shaky finger guns* AU where Jazz dies instead of Prowl. After a gruesome battle with the cons, Jazz was left injured badly, left to fade out. Prowl was able to find him via com link, but he was already too late.
Prowl had lost his sensei a similar way, loosing his friend only damaged him more, but gave him a greater purpose to bring down the decepticons who were responsible. Prowl however, got a bit too endorsed in wanting to avenge his friend, in which his motives later on questioned his autobot allies. He did it in honor of his sensei, in honor of Jazz.
Cybertronian Database 