Open a game master Kolguyev session (only tested on kolguyev)
Spawn an LAV and place it on the ground.
Spawn an ai and drag into the LAV.
Tap 'C' while hovering over the AI unit to take control.
Switch to gunner seat
Press '2' to switch to HE rounds.
Fire into the air
The rounds will airburst after a short duration, when they should continue moving until they hit an object.