It's all about the night with the NLR, so it only makes sense for the NLRAF to have a stealth aircraft force. The F-117 should be under the Tactical Bomber wing, but someponies complained about that so it is considered a fighter. This camouflage is also used on the SU-47, SR-71, and U-2.
Rumors are the NLRAF also has the PAK-FA, but we can neither confirm or deny that
It's Celestia's personal, nuclear-armed fighter.