Sometimes (it seems consistently only when supersonic) there's a weird sound when firing missiles. Like this:
It is, I suppose, a sonic boom: Both the observer in the jet and the missile are supersonic and travelling alongside each other at some finite separation, and the observer is overtaken by the missile. So that explains the abruptness of the start of the sound, I think. However, it seems to die off as abruptly, which I think is unphysical. Also, it seems far too loud.
You can see me looking around in the video to see if it depends on head position, which is doesn't seem to.
Any ideas?