The pilot says he was sent by your father.
Read more Cassian Andor QuotesFrom: Rogue One: A Star Wars Story
Chirrut Îmwe : Look for the Force...Baze Malbus : Chirrut.Chirrut Îmwe : ...and you will always find me.
If we can make it to the ground, we'll take the next chance. And the next. On and on until we win... or the chances are spent.
My father's revenge: he put a flaw in the Death Star. He put a fuse in the middle of your machine, and I've just told the entire galaxy how to light it.