XF-108 Rapier
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Role Escort Fighter

Envisioned in 1975 as a dedicated escort Tactical Surface Fighter for the HI-MAERF, the XF-108 was intended to partner the XG-70 Valkyrie during strategic anti-Hive operations.

Like the Hi-MAERF project itself, development on the XF-108 stopped when the program was shelved.


  • While the TSF Rapier's history largely mirrors that of its real-world counterpart's, the XF-108 Rapier, the model itself is the only (X)F-### aircraft to have a TSF counterpart; all other TSFs are derived from aircraft that have transited into the United States' 1962 tri-service designation system.