Editing Columbine High School massacre (section)

===11:22&nbsp;a.m.: Police response and West Entrance shootouts===
At 11:22&nbsp;a.m., a custodian called Deputy Neil Gardner, the assigned resource officer to Columbine, on the school radio, requesting assistance in the senior parking lot. The only paved route took him around the school to the east and south on Pierce Street, where at 11:23&nbsp;a.m., he heard on his police radio that a female was down, and assumed she had been struck by a car. While exiting his patrol car in the senior lot at 11:24, he heard another call on the school radio, "Neil, there's a shooter in the school."<ref name=deputies />

Harris, at the west entrance, immediately turned and fired ten shots from his carbine at Gardner, who was {{Convert|60|yards|m}} away.<ref name=deputies /> As Harris reloaded his carbine, Gardner leaned over the top of his car and fired four rounds at Harris from his service pistol.<ref name=eyes/><ref>{{Harvnb|Kass|2009|p=8}}</ref> Harris ducked back behind the building, and Gardner momentarily believed that he had hit him. Harris then reemerged and fired at least four more rounds at Gardner (which missed and struck two parked cars), before retreating into the building. No one was hit during the exchange of gunfire.{{efn|Gardner was not wearing his prescription eyeglasses.<ref>{{cite news |first=Trent |last=Seibert |date=November 23, 2000 |title=Columbine: Deputy's eyesight in question |url=http://extras.denverpost.com/news/col1123b.htm |work=The Denver Post |access-date=October 15, 2014 |archive-url=https://web.archive.org/web/20150322205016/http://extras.denverpost.com/news/col1123b.htm |archive-date=March 22, 2015 |url-status=live}}</ref>}} Gardner reported on his police radio, "Shots in the building. I need someone in the south lot with me."<ref name=deputies /> By this point, Harris had shot 47 times, and Klebold 5.<ref name=crit/> The shooters then entered the school through the west entrance, moving along the main north hallway, throwing pipe bombs and shooting at anyone they encountered. Klebold shot Stephanie Munson in the ankle, but she was able to walk out of the school.<ref name=eyes/> The pair then shot out the windows to the east entrance of the school. After proceeding through the hall several times and shooting toward—and missing—any students they saw, they went toward the west entrance and turned into the library hallway.{{sfn|Watson|2003|p=198}}

Deputies Paul Smoker and Paul Magor, motorcycle patrolmen for the Jefferson County Sheriff's Office, were writing a traffic ticket north of the school when the "female down" call came in at 11:23&nbsp;a.m. Taking the shortest route, they drove their motorcycles over grass between the athletic fields and headed toward the west entrance. When they saw Deputies Scott Taborsky, Rick Searle, and Kevin Walker following them in their patrol car, they abandoned their motorcycles for the safety of the car. The six deputies had begun to rescue two wounded students near the ball fields when another gunfight broke out at 11:26, as Harris returned to the double doors and again began shooting at Deputy Gardner, who returned fire. From the hilltop, Deputy Smoker fired three rounds from his pistol at Harris, who again retreated into the building. As before, no one was hit.<ref name="timeline1" /><ref name="deputies" />

Inside the school cafeteria, Dave Sanders and two custodians, Jon Curtis and Jay Gallatine, initially told students to get under the tables, then evacuated students up the staircase leading to the second floor of the school. The stairs were located around the corner from the library hallway in the main south hallway. Sanders then tried to secure as much of the school as he could.<ref name=eyes/><ref name=dave /> Sanders and another student were at the end of the hallway, where he gestured for students in the library to stay, before encountering Harris and Klebold, who were approaching from the corner of the north hallway. Sanders and the student turned and ran in the opposite direction.<ref name=":5">{{cite news |first1=Lou |last1=Kilzer |first2=Gary |last2=Massaro |url=http://www.denver-rmn.com/shooting/0516dave3.shtml |title=Science teacher died a hero |newspaper=Rocky Mountain News |archive-url=https://web.archive.org/web/20070927234555/http://www.denver-rmn.com/shooting/0516dave3.shtml |archive-date=September 27, 2007}}</ref> Harris and Klebold shot at them both, with Harris hitting Sanders twice in the back and neck, hitting his teeth on exit, but missing the student.<ref name=eyes/><ref name=dave /> The latter ran into a science classroom and warned everyone to hide. Klebold walked over towards Sanders, who had collapsed, and tossed a pipe bomb, then returned to Harris up the library hallway.<ref>{{Harvnb|Cullen|2009|p=139}}</ref>

Sanders struggled toward the science area, and teacher Rich Long took him into a classroom where 30 students were located. Due to his knowledge of first aid, student Aaron Hancey was brought to the classroom from another by teacher Kent Friesen despite the unfolding commotion. With the assistance of fellow student Kevin Starkey and teacher Theresa Miller, Hancey administered first aid to Sanders for three hours, attempting to stem the blood loss using shirts from students in the room, and showing him pictures from his wallet to keep him talking.<ref name=eyes/><ref name=hancey>{{cite web |last=Trostle |first=Pat |url=http://news.hjnews.com/columbine-hero-has-local-ties/article_b823be2b-4681-53c7-b595-0d7b1380190d.html |title=Columbine hero has local ties |date=February 2, 2000 |access-date=April 9, 2017 |archive-url=https://web.archive.org/web/20170310234158/http://news.hjnews.com/columbine-hero-has-local-ties/article_b823be2b-4681-53c7-b595-0d7b1380190d.html |archive-date=March 10, 2017 |url-status=live}}</ref><ref>{{Harvnb|Klebold|2016|p=129}}</ref> Using a phone in the room, Miller and several students maintained contact with police outside the school.<ref>{{Harvnb|Cullen|2009|p=141}}</ref>

As the shooting unfolded, pipe bombs were tossed in the hallways and down into the cafeteria. Patti Nielson in the library called 9-1-1, telling her story and urging students in the library to take cover beneath desks. According to transcripts, her call was received by a [[Dispatcher|9–1–1 operator]] at 11:25:18&nbsp;a.m.<ref name="patti">{{cite video |url=http://i.cnn.net/cnn/SPECIALS/2000/columbine.cd/videos/PATTI.mpg |title=PATTI |publisher=Jeffco 911 |access-date=October 15, 2014 |archive-url=https://web.archive.org/web/20110514003812/http://i.cnn.net/cnn/SPECIALS/2000/columbine.cd/videos/PATTI.mpg |archive-date=May 14, 2011 |url-status=live}}</ref>
{{anchor|quotebox}}{{Quote box
| width = 33%
| qalign = left
| qstyle = padding-right:1.5em;
| title = Fatalities
| quote = {{olist
 |'''[[Rachel Scott]]''' (aged 17), killed on grass outside west entrance by Harris
 |'''Daniel Rohrbough''' (aged 15), killed at bottom of stairs leading to west entrance by Harris
 |'''[[Anne Marie Hochhalter]]''' (aged 17), shot and injured outside the school by Harris; died of injuries in February 2025
 |'''William David Sanders''' (aged 47), shot in hallway adjacent library by Harris; died of blood loss in a science classroom
 |'''Kyle Velasquez''' (aged 16), killed while sitting in a chair near the middle of the north computer table in the library by Klebold
 |'''Steven Curnow''' (aged 14), killed at the west end of the south computer table in the library by Harris
 |'''[[Cassie Bernall]]''' (aged 17), killed under library table No.&nbsp;19 by Harris
 |'''Isaiah Shoels''' (aged 18), killed under library table No.&nbsp;16 by Harris
 |'''Matthew Kechter''' (aged 16), killed under library table No.&nbsp;16 by Klebold
 |'''Lauren Townsend''' (aged 18), killed under library table No.&nbsp;2 by Klebold
 |'''John Tomlin''' (aged 16), killed next to library table No.&nbsp;6 by Klebold; after being wounded by Harris
 |'''Kelly Fleming''' (aged 16), killed next to library table No.&nbsp;2 by Harris
 |'''Daniel Mauser''' (aged 15), killed under library table No.&nbsp;9 by Harris
 |'''Corey DePooter''' (aged 17), killed under library table No.&nbsp;14 by Klebold
 |'''[[Eric Harris and Dylan Klebold#Eric Harris|''Eric Harris'']]''' (perpetrator) (aged 18), committed suicide via a self-inflicted gunshot wound
 |'''[[Eric Harris and Dylan Klebold#Dylan Klebold|''Dylan Klebold'']]''' (perpetrator) (aged 17), committed suicide via a self-inflicted gunshot wound}}
}}