He's the one who turns into a stealth jet! He used to be a Decepticon, but he switched sides and started fighting for the Autobots... [Gokudera starts with an enthusiastic tone, but it turns serious and a little sad here.] ...and then, after he and Optimus were wounded, he sacrificed his life so Optimus could defeat the Fallen!

[While he was watching it Gokudera thought, I would do the same for you, Tenth! ...except for the dying part. He has to live so he can watch the fireworks with everyone. Still, it was so touching! Gokudera is having all of the feelings! aesifslief! AND HE IS TOTALLY NOT CRYING RIGHT NOW, OKAY?!]