Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

[Q]: The Columbine High School massacre was a school shooting that occurred on April 20 , 1999 , at Columbine High School in Columbine , an unincorporated area of Jefferson County in the American state of Colorado . In addition to the shootings , the complex and highly planned attack involved a fire bomb to divert firefighters , propane tanks converted to bombs placed in the cafeteria , 99 explosive devices , and carbombs . The perpetrators , senior students Eric Harris and Dylan Klebold , murdered 12 students and one teacher . They injured 21 additional people , and three more were injured while attempting to escape the school . The pair subsequently committed suicide .
[A]: Columbine High School massacre


[Q]: Lauren Tom ( born August 4 , 1961 ) is an American actress and voice artist . Her roles include Lena St. Clair in The Joy Luck Club , Julie in the NBC sitcom Friends , Dot in the final season of Grace Under Fire , and the voices for both mother and daughter characters on three animated TV comedy series : on Futurama she voiced Amy Wong and her mother Inez , on King of the Hill she voiced Minh and Connie Souphanousinphone and finally she voiced Numbuh 3 and her mother Genki in Codename Kids Next Door . She portrays Celia Mack in the Disney Channel series Andi Mack .
[A]: Lauren Tom


[Q]: Protection of the nation 's highest elected leaders and other government officials remains the other key mission of the United States Secret Service . After the 1901 assassination of President William McKinley , Congress also directed the Secret Service to protect the President of the United States .
[A]:
United States Secret Service