Interceptors drop masses of firebombs and large Heatstones all over the mountains, thawing through the deep layers of snow and ice.
... Oh dear Woodpeckers are scrambled, loaded with Freezing bullets to counter the effect.
All available manpower not working on keeping things frozen is poured into following the instructions of NA scientists. The occasional interceptor is impaled with an RaR spike
The woodpeckers repurpose their disarmer guns to deflect the attacks and attempt to lure the interceptor within colony AA range.
The first interceptor to be fired on by the colony causes the others to turn back.
Walp The colony makes do with their freezing kanoka and freezing kanoka bullets, hopefully keeping floodwaters at bay? Hmm... Depending on how much flooding there is, the hunks of glacier the cities are on could be swept elsewhere That could be... interesting