Given the absolutely deafening silence I would not be surprised if GC told him there were absolutely positively no friendlies in the area at that vector and altitude. Historically, silence always indicates there's something to cover up.

There is also old timer thinking where back in the 50s/60s AIM-9L days it takes a good fraction of a minute for the compressed gas tank to cool the sensor and back in the day they used a rotating 1-D sensor that also took a fraction of a minute to lock on. Very popular hollywood-esque drama "I can't get a lock I can't get a lock" drama.

Unrealistically video game type experience was back as far as the 80s you could spam sidewinders as fast as you can click. LOL they didn't work like that IRL until at least the late 90s.

Note they haven't make missiles like that in 30 years, the 9X and everything newer uses an electric powered cooler that can chill before engagement and stays chilled the entire flight if they want. Its not unclassified but assumed that the missile will not go green on preflight if the electric cooler isn't working on the ground, even the DCS world guys don't know. And they haven't used rotating 1-d sensors since like the 80s, the modern 2-d sensors look like civilian thermal cameras and can "lock on" as fast as a computer algorithm can find the closest object to the center of the sensor that is red-hot, which is probably a couple milliseconds, and apparently based on public test videos the sensor slew rate is at least as fast as human hands pointing a camera. Does anyone make CCD arrays that can go "much faster" refresh than 60 hz for video? I don't think that tech has leaked out except for exotic high speed cameras, and I don't know of any exotic high speed IR cameras, which would be pretty interesting if they existed for engineering purposes. So I bet a AIM-9X takes less than a second to lock on. Which seems to match tons of public unclassified info that modern sidewinders are point and shoot fast as a civilian smartphone or real camera.

So if you're an old timer using 1970s equipment it would take at least 10 to 45 seconds per missile launch which makes for a WTF scenario when 3 friendlies got shot down in a row.

So if you are post Y2K era like we are today, you click lock on lock on boresight mode, click the re lock button on and shoot on each target, the entire engagement took probably about 3 seconds depending on adrenaline level?

There's plenty of public unclassified test video out there and the difference between 90s and 10s IR guided missiles "UI" is pretty dramatic. From near WWI submarine torpedo level of drama and delay to just point and click about that fast. It was a pretty big change tactically.