The context of the following conversation is Carson was in charge of a squad of soldiers about to get shot by the enemy.:
Carson says So we were pinned down.  My corporal had just got hit by an RPG and it looked like it was over for my squad..
The friend responds Oh god!  What did you guys do then?.
Carson responds Well, I had my general call in an airstrike, and in about four minutes, an A-ten Warthog showed up and saved us for good..
The friend responds Wow!  Warthogs are awesome..
Carson responds Yep. The saying is, if you hear a Warthog, then you're already dead..
The friend responds Death to all enemies of Freedom!.