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kind of FBI-Warning png website is displaying to scare people is detailed below McVeigh initially intended only to destroy a federal building, but he later decided that his message would be better received if many people were killed in the bombing.[26] McVeigh's criterion for potential attack sites was that the target should house at least two of three federal law-enforcement agencies: the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), the Federal Bureau of Investigation (FBI), or the Drug Enforcement Administration (DEA). He regarded the presence of additional law-enforcement agencies, such as the Secret Service or the U.S. Marshals Service, as a bonus.[27] McVeigh, a resident of Kingman, Arizona, considered targets in Missouri, Arizona, Texas, and Arkansas.[27] McVeigh stated in his authorized biography that he wanted to minimize nongovernmental casualties, so he ruled out a 40-story government building in Little Rock, Arkansas, because of the presence of a florist's shop on the ground floor.[28] In December 1994, McVeigh and Fortier visited Oklahoma City to inspect their target: the Alfred P. Murrah Federal Building.[23] The Murrah building had been previously targeted in October 1983 by white supremacist group The Covenant, The Sword, and the Arm of the Lord, including founder James Ellison and Richard Snell. The group had plotted to park "a van or trailer in front of the Federal Building and blow it up with rockets detonated by a timer."[29] After Snell's appeal for murdering two people in unrelated cases was denied, he was executed the same day as the Murrah bombing.[30] The nine-story building, built in 1977, was named for a federal judge and housed fourteen federal agencies including the DEA, ATF, Social Security Administration, and recruiting offices for the Army and Marine Corps.[31] The Murrah building was chosen for its glass front—which was expected to shatter under the impact of the blast—and its adjacent large, open parking lot across the street, which might absorb and dissipate some of the force, and protect the occupants of nearby non-federal buildings.[28] In addition, McVeigh believed that the open space around the building would provide better photo opportunities for propaganda purposes.[28] The attack was planned to take place on April 19, 1995, to coincide with the anniversary of the Waco Siege and the 220th anniversary of the Battles of Lexington and Concord.[32] [edit]Gathering materials "The truck rental — $250. The fertilizer was about... it was either $250 or $500. The nitro methane was the big cost. It was like $1,500. Actually, lemme see, 900, 2,700,... we're talking $3,500 there... Lets round it up. I just gave you the major expenses, so go to like five grand... what's five grand?" —Timothy McVeigh, on the cost of the preparations[33] McVeigh and Nichols purchased or stole the materials they needed to manufacture the bomb, which they stored in rented sheds. In August 1994, McVeigh obtained nine Kinestiks from gun collector Roger E. Moore, and ignited the devices with Nichols outside Nichols' home in Herington, Kansas.[34][35] On September 30, 1994, Nichols bought forty 50-pound (23 kg) bags of ammonium nitrate from Mid-Kansas Coop in McPherson, Kansas, an amount regarded as unusual even for a farmer. Nichols bought an additional 50-pound (23 kg) bag on October 18, 1994.[23] McVeigh approached Fortier and asked him to assist with the bombing project, but he refused.[36][37] They allegedly robbed gun collector Roger E. Moore in his home of $60,000 worth of guns, gold, silver, and jewels, transporting the property in the victim's own van.[36] McVeigh had previously visited Moore's ranch, but doubts have been raised about Nichols and McVeigh's involvement in the robbery for several reasons. The robbers wore ski masks (making a positive identification impossible), and the physical description given did not match Nic Source: http://en.wikipedia.org/wiki/Oklahoma_City_bombing