With the rollout of the Osean Lightweight Fighter, the F-16 Fighting Falcon, the then Country of Perbla was one of the first foreign buyers of the fighter. With purchases made in 1983, the Country would be one of the first to receive Block-25 F-16C’s to bolster their historically middling air force that had up to that point been reliant on the F-5E for its Airborne fighter capability. The 401st Fighter Squadron ‘Gallo’ (Rooster) would receive their eighteen F-16 Fighting Falcons in 1984 under the ‘Peace Aztec’ Program. Stationed at Airbase Number 2 outside San Vijo, the squadron participated in the 2011 civil unrest that saw the restructuring of Perbla into Carranza.
Today the 401st Squadron still operates their remaining F-16C Fighters in conjunction with Osean Air Defense Force fighters protecting their respective borders. Most notably in interdiction roles against Adamas fighters to their East and Leasath along their southern border.