Again, since Homer and Fiona don’t recognize the language the soldiers speak, readers can infer that the invading force is not a bunch of disgruntled Australians and is definitely coming from a foreign country. The overturned police cars, ambulances, and blood all suggest that the takeover was not a peaceful one, and that it involved violence and possibly even death. The invasion was also organized and powerful, since it led to such widespread destruction and societal breakdown.