How has the town changed?

From the text:

On this, the third day after The Day, the character of Fort Repose had changed. Every building still stood, no brick had been displaced, yet all was altered, especially the people.

Earlier, Randy had noticed that some of the plate-glass store windows had cracked under the shock waves from Tampa and Orlando. Now the windows of a number of stores were shattered entirely, and glass littered the sidewalks. From alleyways came the sour smell of uncollected garbage.

Most of the parking spaces on Yulee and St. Johns incongruously were occupied, but the cars themselves were empty, and several had been stripped of wheels.

There was no commerce. There were few people. Altogether, Randy saw only four or five cars in motion. Those who were not out of gas hoarded what remained in their tanks against graver emergencies to come.

The pedestrians he saw seemed apprehensive, hurrying along on missions private and vital, shoulders hunched, eyes directed dead ahead. There were no women on the streets, and the men did not walk in pairs, but alone and warily. Randy saw several acquaintances who must have recognized his car. Not one smiled or waved.