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Photos of the arsenal that the Anne Arrundel County Police found are shown during a press conference on the arrest of Neil E. Prescott at the Prince George's County Police Headquarters on July 27, 2012 in Landover, Maryland. Prescott was in the process of being terminated from his job at Pitney Bowes when he made threats toward his employer, a search of his home tuned up an arsenal of weapons. (Photo by Kris Connor/Getty Images)

Maryland massacre plot foiled by police

A Maryland man accused of threatening to shoot up his workplace and who police say called himself "a joker" was described by a friend as a "gentle giant" who collected firearms for target practice and had expressed concerns about someone breaking into his apartment.