Must be somwhere around there altough i have failed to find it .

Or it might be hardcoded ..
But there's a thing i'm thinking about ( not good ) I remember that the superweapon fires a weapon wich can't be changed in the superweapon section but i know that the warhead had a tag that made the bright light and nuke appear .
Just a second. Aha found it :P
NukeMaker=yes ; I couldn't think of a better name for this flag. It applies only to the weapon that shoots straight up and then uses the houses' targeting for where to come down
Now i remember, in my early mooding days i changed Gi's machinegun's warhead with this one and at every shot a nuke would explode ( no nuke would comme down from the sky (up) ) and of course kill my men,and the nuke had both animations and with the screen efect .
I hope it was helpfull . (Hope)
