Columbine High School massacre Potential Students") program. He found the transition to Ken Caryl Middle School difficult. Unlike the white caps of the jocks, Harris and Klebold wore black baseball caps. As was typical in the 1990s, they wore them backwards. Harris wore a KMFDM cap, and apparently did not wear it during the massacre. Klebold's cap had a Colorado Avalanche logo on the front and a Boston Red Sox logo sewn onto the back. Following the Columbine shooting, schools across the United States instituted new security measures such as see-through backpacks, metal detectors, school uniforms, and security guards. Some schools implemented school door
Columbine High School massacre shooting which Attorney General Janet Reno called a Columbine "copycat". A friend of Harris and Klebold, Eric Veik, was arrested after threatening to "finish the job" at CHS in October, 1999. In 2001, Charles Andrew Williams, the Santana High School shooter, reportedly told his friends that he was going to "pull a Columbine," though none of them took him seriously. In 2005, Jeff Weise, an American Indian who wore a trench coat, killed his grandfather, who was a police officer, and his girlfriend. He took his grandfather's weapon and his squad car, and drove to his former high school in