A slang term/inside joke regarding artillery fire (howitzers). This originated from the 2003 E3 preview movie Capcom was distributing for Steel Battalion: Line of Contact. In the movie, a pilot codenamed "FOX4" gleefully exclaims "Cheddar coming boys!" as he fires a howitzer round at enemy positions. Likely, this was bad translation from the original Japanese conversation, but it has gone on to become part of the folklore of the game.