Original sentence: He charges into the battle, and nearly is killed until Optimus Prime and Jetfire link up to form Jet Convoy.Jetfire's cockiness leads him to underestimate the Decepticons on Earth
Edited sentence: Jet Convoy brings Starscream down and throws Megatron and Demolisher into the sea.Optimus Prime advices Jetfire to behave more warily in the future only to hear his answer that there is nothing to worry about until he's here.Optimus Prime and Jetfire link up each other and form a new immense over-powerful robot Jet Convoy.Optimus appears on the sky battlefield just in the moment when Starscream prepares to strike a mortal blow to Jetfire.So the Thrust's plan is a complete flop again.Well, that Jetfire is hopeless, indeed