Battlerock Galaxy: Luigi Under the Saucer

So Luigi's somehow gotten himself stranded under one of the saucers in Battlerock's first star mission. Proceed to the end of the level and look for him trapped in a cage underneath the second to last saucer. To set him free, head to the last saucer and catch one of the Bullet Bill's attention. Now run under saucer and long jump to Luigi, then quickly get out of the way just before the Bullet Bill connects to break Luigi out.