sp/mp support pack question

[strumgewehren]

I am trying to trigger specific units only, but this relates to sp/mp support pack.  when I call in fixed wing CAS or airstrikes, the aircraft hit a trigger which plays Aeons jet fly by sound.. which works great but i need only the jets to trigger the sound.. not the men on the ground.. since the jets are spawned from a marker instead of in the mission.. how do i acomplish this?  thankyou

[titan]

group the unit you want to activate the trigger with the trigger.