Disaster Recovery - preparing an organization against terrorist attacks

Using a web browser, search for information related to preparing an organization against terrorist attacks. Look up information on (a) anthrax or another biological attack (like smallpox), (b) sarin or another toxic gas, (c) low-level radiological contamination attacks

Using a web browser, search for available commercial applications that use various forms of RAID technologies, such as RAID 0 through RAID 5. What is the most common implementation? What is the most expensive?