The weapon that the civilians are using is called "Pyngani_Carbonite_Gun" in the XML files, so I think it's a freezing effect rather than an ion effect. That's why it works on the troopers. Maulers, troopers, and bombing runs worked well for me on that map. The initial rush is the hardest part. Also, even frozen units can spot for SPMA's
Gary Swift (aka gswift)
Lenexa, Kansas USA
You can try to monkey-proof your program, but you'll never monkey-proof the monkey.