Using squad command voices

[Messiah]

ok - i have a chopper evac and before the chopper leaves the Officer Sounds off and all the squad reply with '#clear' (thanx to Mike_Beil on that info)

so - i know that the men can say clear when, funnily enuff, the area is clear of the enemy - so, is it possible to force the men to say 'clear' - the one which came with the game? it just saves me having to add more sound files to the mission  

cheers.