The Ark entered the atmosphere.
Jetfire: We will crash on this planet, but if we Autobots have to die, then we'll take the Decepticons with us.
Jetfire (continues): I, Jetfire, leader of the Autobots, have programmed the Ark for this crash. All Decepticons are doomed Megatron!
Megatron: Not all, Jetfire. We, Decepticon leaders, also make plans..... Soundwave-Leave!!