1. create "B_MBT_01_arty_F" named test
2. place player >100 meters away
3. run the following script:
test fire ["mortar_155mm_AMOS", "Single1"];
sleep 1;
test fire ["mortar_155mm_AMOS", "Single1"];
4. the vehicle will attempt to point the main gun directly overhead after the first round is fired
5. if the player moves closer than about 100 meters before the second round fires, the vehicle's main gun will move to the correct weapon direction
6. changing the above script to use "sleep 20" or similar will cause the AI to behave as expected