Read...
At the start I tell you to notice that the AH-Viper has been downed. Why? Because I want you to know that it is out of the airspace and I'll refer back to it in a second...
I play through the next bit at a faster speed so you can see that I'm not doing anything to set this up...
I notice the SOFLAM has painted a target on the beach (the AMTRAC) so I pull out my Javelin and lock on to the target. When a Javelin is fired at a vehicle that has been targeted via SOFLAM, it travels into the air so it can hit the top of the vehicle (it's weakest and most vulnerable spot, thus dealing more damage)...
On it's way upwards, it hits a passing enemy jet going who knows how fast. The reason why we know it's a jet is because the AH-Viper was already shot down :O !!
Make sense now?
Intro Music Emelkay - Fabrication