When preparing food for storage, take into account the need for future food, if long-term emergencies occur. This would include a space for growing your own food, hydroponics, plant food, and good quality heirloom non-GMO seeds, UV lamps, and good quality earth to grow the seeds in. For tips on how to stock a survival garden, see our topic on homesteading to learn more.
The U.S. Department of Homeland Security (DHS) in their "If You See Something, Say Something" campaign says that "the public should report only suspicious behavior and situations...rather than beliefs, thoughts, ideas, expressions, associations, or speech...". However, it is alleged that a DHS list of the characteristics of potential domestic terrorists used in law enforcement training includes "Survivalist literature (fictional books such as Patriots and One Second After are mentioned by name)", "Self-sufficiency (stockpiling food, ammo, hand tools, medical supplies)", and "Fear of economic collapse (buying gold and barter items)".
One item you must have is jug or two of plain, unscented, regular bleach and an eye-dropper for precise measurement. Adding one part bleach to nine parts water makes a great disinfectant, but more importantly you can add 16 drops of bleach to a gallon of water to kill germs in an emergency. It has other obvious uses for hygiene, and is too cheap to not have handy for such an occasion. Just keep in mind that bleach has a short shelf life, not the first thing you’d want to stockpile. Get more than one water filter, such as the ones made by Sawyer or Berkey.
After 9/11, my dad filled a duffel bag with some energy bars, a couple gallons of water, some penicillin, and a map. Amid scaremongering headlines about imminent anthrax and “dirty bomb” attacks in the city, he wanted to have some supplies on hand in case we needed to get out of Brooklyn fast. Were he to assemble such a bag today, he’d likely stumble on a number of companies promising a more wholesale brand of disaster preparedness: a box full of shelf-stable freeze-dried meals, to be revived from their dessicated state with the addition of boiled water.