Fan Casting Highest Unit: Fallen Dawn

This is a movie I'm making on an app called CAMC. If you are on CAMC don't read the bio. Major spoilers. Anyway, here is the bio: Billy Blaese is killed by a Colonel in Area 51, but the public aren't told. His best friend Jason Eisenhardt, now the Deputy Mayor of their home city, has spent five years looking for him, and refuses to give up. When a masked man with a vengeance shows up looking for "the Colonel who did this to him", and Jason starts floating after the Mayor suggests that he might be an alien, the Department of Alien Warfare (D.A.W.N.) and the Highest Unit of military (Area 51 soldiers) team up to prevent an Invasion. Jason eventually learns that they plan to kill him, knowing that he's an alien, so although he works with them at first, they eventually become the main enemy.