Kruger = Main Defense for Elysium?
Why was Kruger the first line of defense against ships approaching Elysium? For somewhere that was supposed to be inhabited by exclusively the super rich, they relied on one random dude chilling on earth to manually take out any threats? They couldnt have automated defenses or a dedicated salary air force to protect Elysium? I thought he worked well as Foster's man for dirty work down on earth, but it just doesnt make sense for him to be the main defense for Elysium as well.
Overall I liked this movie, but I think that there was a lot of wasted potential and a lot of silly plot holes like this.