Left over in the game files, data miners found the F-2000 was used as a lazer designator for an unused killstreak. The Killstreak would've either been some of kind orbital airstrike. Or a bombing strafe run that used the Stealth Bombers 3-4 of em. The streak was likely cut for balancing issues. Also the fact that the game already had two other unmanned airstrikes. The Harrier was also cut late in development, which may have been another reason this streak was cut.