I played it and the AI hadn't attacked the target yet but was still lining up at the end.
First you attacked target number 1 with guns, Then told wing to form up on you
You then told wing to attack air defense target with maverick. The wing then called out 2 targets, with the air defense one at 5 o clock. Shortly after the track ended.
You may not have given the wing enough time to do the job before ending the track. It's also possible that the rang was too close when you gave the order making it impossible for the wing to attack. I would try it again.