Original sentence: A propaganda clip shows Carmen, Ace, and Rico as model servicemen, encouraging viewers to enlist in the armed forces.In the Federation, citizenship is a privilege, earned by performing such activities as military service, which grants individuals opportunities prohibited to basic civilians.The Fleet encounters unexpectedly heavy fire from the Bugs, and Carmen's ship is destroyed.They are surrounded by Bugs, and a brain bug uses its proboscis to pierce Zander's skull and eat his brain
Edited sentence: In the Federation, citizenship is a privilege, earned by performing such activities as optional military service, which grants individuals opportunities prohibited to basic civilians.On Earth, the planet is ruled by a global, oppressive militarist regime called the Global Federation of Earth.The Fleet encounters unexpectedly heavy ground fire from the Tanker Bugs, and Carmen's ship is destroyed.The film ends with a propaganda clip that shows Carmen, Ace, and Rico as model servicemen, encouraging viewers to enlist in the armed forces.They are surrounded by Warrior Bugs, and a brain bug uses its proboscis to pierce Zander's skull and eat his brain