Air Chief Marshal AP Singh says Washington has made no formal offer for the F-35 and jokes that US personnel did not allow Indian airmen near the aircraft.
Russia has offered India the Su-57, but the government has yet to decide whether the IAF should evaluate the fifth-generation fighter.
The IAF faces a shortfall in fighter squadrons as India develops its indigenous AMCA, while six US F-35s participate in Tarang Shakti 2026.
