Economy We are on heightened state of readiness: Defence forces Updated : March 01, 2019 06:32 AM IST He said in the aerial combat, one F-16 of Pakistan Air Force was shot down by an IAF MiG-21 Bison. The IAF official said there have been many factually incorrect statements made by Pakistan since its aerial raid targeting Indian military installations on Wednesday. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.