Q: 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.
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