Two IRAF MiG-25s fired Use_firearm missiles at a group of F-15Cs escorting a bombing Attack run in Iraq ( which were evaded by the F-15s ) .

The two MiGs and F-15s flew Motion straight at each other , each attempting to visually identify the other .

With the now lone MiG-29 closing head-on with the pair of F-15s , Underhill gained Getting radar lock-on , but did not fire due Causation to a glitch in his IFF interrogator system keeping him from being certain he was n't about to shoot down Use_firearm a Coalition aircraft .