
[I]f the toll of destruction was as high as I expected, then money was about to become worthless. We would need trade goods. I was hungry. I ate two eggs and some bacon—still warm—and started putting the rest of the food away. We had food for a week, maybe... but hardly a balanced diet. Maybe we could trade with other apartments. This was a big building. There must be empty apartments, too, that we could raid for canned soup and the like.
—Larry Niven, Inconstant Moon (1971)

In the immediate aftermath of Zero Hour, a waiting game begins. Stunned survivors of the initial disasters find safety and gather family, friends, and supplies. Some looting takes place, but few murders. Most people are unaware of the true extent of the crisis and, even if sorely tried to this point, expect rescue and relief will arrive soon. Life, they think, will eventually go back to normal. The battered core of civilized life holds together. Surviving police and military forces struggle to maintain order, assisted by trusted civilians. Religious groups offer aid. Keeping busy is the best therapy. The only news is rumor.
Survivalists, preoccupied with being able to meet all challenges, will not necessarily have the edge here. Their houses burn down like everyone else's; their supplies are often ruined or lost thanks to the unexpected nature of the disaster. Still, they have training and knowledge that many others do not. Survivalists come in two general varieties: the mainstream crowd, which does not espouse extremist political or religious views, and the fringe, who do. The mainstream group is likely to offer charity and help when the situation allows. The fringe group is more likely to avoid "outsiders" or to prey on them. Still, at this early stage when the big picture is not clear to all, the usual curbs on antisocial behavior hold for most. (Habitual criminals are, of course, another story.)
Barter begins on an informal level, neighbors trading with neighbors for goods. Price gouging, however, is widespread, regardless of the disaster. The foolish sellers take paper money.
Because geomagnetic currents are still active in conductive materials, particularly thick rails and cables that haven't yet burned through, it is understandable if a large portion of the surviving population comes to believe that an angry divine hand is responsible for the trouble. How that thought is put to practical use will vary widely.
This breathing space after Zero Hour does not last long. The big change comes when food and water either runs out or becomes too expensive thanks to price gouging. At that point, all bets are off. Survivors of that later period will look back on this period as the calm before the Category 5 hurricane.
Survivalism: (Wikipedia) A look at the survivalist subculture.
Survivalist.info: Many links to more "mainstream" survival websites.
The New Survivalism: (The New York Times) Long article on current (2008) trends and popular-culture concepts.
Ready.gov: (U.S. Dept. of Homeland Security) If the DAYLIGHT scenario plays out in the years following the 9/11/2001 attacks, additional government information will be available in the effort to innoculate the population against terrorist attacks.
Disaster Services: (American Red Cross) More information for disaster survival, possibly applicable here.
Are You Ready: (U.S. FEMA) And yet more all-purpose disaster information that prepared individuals are likely to know.
Managing Traumatic Stress: (American Psychological Assoc.) Very good overview of people's reactions to severe trauma and disaster.
Emotional Reactions to Disasters: (U. of Illinois) More on psychological responses to disasters.
Coping with Children's Reactions to Disasters: (Honolulu.gov) Children's reactions to disaster, and how to help.
Gouge Away: (BNet) One writer's view of price gouging after natural disasters, looking at both sides of the issue.
Food Shortages: (CBS News) Even in the present day, much of the world has only a precarious access to food. When the food runs out and the riots start, real chaos and madness begin.
How Will We Feed the World?: (Telegraph (London)) Further information on current food shortages applicable to DAYLIGHT.
Last updated 06/04/2010
