Arius: Your father appears to be cooperating. You will be back with him soon. Won't that be nice?
Jenny: Not as nearly as nice as watching him smash your face in.
Sully: Here's twenty dollars to get some beers in Val Verde. It'll give us all a little more time with your daughter.
Henriques: Heh.
Matrix: You're a funny man, Sully, I like you. That's why I'm going to kill you last.
Matrix: Don't disturb my friend. He's dead tired.
Cooke: This Green Beret's going to kick your ass.
Matrix: I eat Green Berets for breakfast, and right now I'm very hungry!
Answer: Possibly so any surviving enemies they encountered on previous missions and or tours of duty couldn't hunt them down and kill them for revenge.