Editing Columbine High School massacre (section)

===11:19&nbsp;a.m.: Shooting begins===
At 11:19&nbsp;a.m., 17-year-old [[Rachel Scott]] and her friend Richard Castaldo were having lunch and sitting on the grass next to the west entrance of the school. Klebold threw a pipe bomb towards the parking lot; the bomb only partially detonated, causing it to give off smoke. Castaldo thought it was no more than a crude senior prank. Likewise, several students during the incident first thought that they were watching a prank.<ref name=eyes/><ref name=librev/>

The two allegedly returned to where Rachel Scott and Richard Castaldo lay on the ground injured.{{clarify|reason=Injured from gunshots most likely, but information seems to be missing here as the previous paragraph does not mention it.|date=March 2025}} Scott was killed instantly when she was hit four times with rounds fired from Harris's [[carbine]]; one shot was to the [[Temple (anatomy)|left temple]].<ref name=OOL>{{Cite book |url=http://www.acolumbinesite.com/reports/cr/p11867-11870.pdf |archive-url=https://web.archive.org/web/20181007023504/http://www.acolumbinesite.com/reports/cr/p11867-11870.pdf |archive-date=October 7, 2018 |page=JC-001-011868 |chapter=Columbine High – OOL Deceased |title=Columbine High School 99-7625 Evidence |volume=2 |access-date=October 6, 2018 |publisher=Jefferson County Sheriff's Office |location=Colorado}}</ref> Castaldo was shot eight times in the chest, arm, and abdomen by both Harris and Klebold; he fell unconscious to the ground and was left [[Paralysis|paralyzed]] below the chest.<ref>{{Harvnb|Cullen|2009|p=46}}</ref>

After firing twice, Klebold's TEC-9 jammed, and he was forced to temporarily cease shooting to fix it, which he did by reloading a new magazine into his pistol. Meanwhile, Harris took off his trenchcoat and aimed his carbine down the west staircase in the direction of three students: Daniel Rohrbough, Sean Graves, and Lance Kirklin. The students presumed they were [[Paintball marker|paintball guns]], and were about to walk up the staircase directly below the shooters. Harris fired ten times, killing Rohrbough<ref>{{cite web |url=http://www.hpwhite.com/wp-content/uploads/2013/12/COLUMBINE_HPW.pdf#page=28 |title=Reinvestigation into the Death of Daniel Rohrbough at Columbine High School on April 20, 1999 |publisher=El Paso County Sheriff's Office |access-date=January 4, 2019 |archive-date=October 27, 2018 |archive-url=https://web.archive.org/web/20181027101335/http://www.hpwhite.com/wp-content/uploads/2013/12/COLUMBINE_HPW.pdf#page=28}}</ref> and injuring Graves and Kirklin.<ref name=timeline1 /> William David Sanders, a teacher and coach at the school, was in the cafeteria when he heard the gunfire and began warning students.<ref name=dave>{{cite web |url=http://www.acolumbinesite.com/victim/sanders.php |title=Coach William "Dave" Sanders |website=acolumbinesite.com}}</ref>

Harris turned west and fired seven shots in the direction of five students sitting on the grassy hillside adjacent to the steps and opposite the west entrance of the school:<ref name=timeline1 /> Michael Johnson was hit in the face, leg, and arm but ran and escaped; Mark Taylor was shot in the chest, arms, and leg and fell to the ground, where he faked death; the other three escaped uninjured.<ref name=timeline1 />

Klebold fired down the stairs with his shotgun, injuring Nicholas "Nick" Foss with a graze wound, then walked down the steps toward the cafeteria. He came up to Lance Kirklin, who was already wounded and lying on the ground, weakly calling for help. Klebold said, "Sure. I'll help you," then shot Kirklin in the jaw with his shotgun. Although near-fatally injured, Kirklin would survive.<ref name=eyes>{{cite news |url=http://extras.denverpost.com/news/shot0613a.htm |title=Through the Eyes of Survivors |access-date=March 16, 2017 |newspaper=The Denver Post |date=June 13, 1999 |archive-url=https://web.archive.org/web/20161114133750/http://extras.denverpost.com/news/shot0613a.htm |archive-date=November 14, 2016 |url-status=live}}</ref><ref>{{cite web |url=http://extras.denverpost.com/news/col0416a.htm |title=Lance Kirklin's story |date=April 16, 2000 |first=Kevin |last=Simpson}}</ref> Graves—paralyzed beneath the waist—had crawled into the doorway of the cafeteria's west entrance and collapsed. He rubbed his blood on his face and played dead.<ref name=surfive>{{cite news |url=https://news.google.com/newspapers?nid=1980&dat=20040418&id=VXMyAAAAIBAJ&pg=1302,2595537 |title=Survivors push forward 5 years after Columbine shootings |access-date=August 24, 2016 |newspaper=The Item |date=April 18, 2004}}</ref><ref name=five/> After shooting Kirklin, Klebold walked towards the cafeteria door. He then stepped over the injured Graves to enter the cafeteria.<ref name=surfive/> Graves remembers Klebold saying, "Sorry, dude."<ref>{{Citation |title=Chaos at Columbine: Revisiting the Tragedy 17 Years Later - Pt. 2 - Crime Watch Daily | date=April 20, 2016 |url=https://www.youtube.com/watch?v=o4zwrbuncL8 |language=en |access-date=2022-01-12}}</ref>

Klebold then only briefly entered the cafeteria and did not shoot at the several people still inside. Officials speculated that Klebold went to check on the [[propane bomb]]s. Harris was still on top of the stairs shooting, and severely wounded and partially paralyzed 17-year-old [[Anne Marie Hochhalter]] as she attempted to flee.<ref name=surfive/><ref name=five/>{{efn|Hochhalter would die of her injuries on February 19, 2025, at the age of 43. Her death certificate lists her cause of death as [[sepsis]] due to [[Streptococcus pyogenes]]. Her death was officially ruled a homicide.<ref name=kdvr>{{Cite web |last=Willard |first=Heather |date=12 March 2025 |title=Coroner report: Columbine survivor's death 'best classified as homicide' |url=https://kdvr.com/news/local/coroner-report-columbine-survivors-death-best-classified-as-homicide/ |url-status=live |archive-url=https://web.archive.org/web/20250313161626/https://kdvr.com/news/local/coroner-report-columbine-survivors-death-best-classified-as-homicide/ |archive-date=13 March 2025 |access-date=14 March 2025 |website=FOX31 KVDR}}</ref> }}

Klebold came out of the cafeteria and went back up the stairs to join Harris.<ref name=timeline1 /> They each shot at students standing close to a soccer field but did not hit anyone. They walked toward the west entrance, throwing pipe bombs in several directions, including onto the roof; only a few of these pipe bombs detonated. Witnesses heard one of them say, "This is what we always wanted to do. This is awesome!"<ref name=event1/>

Meanwhile, art teacher Patti Nielson was inside the school; she had noticed the commotion and walked toward the west entrance with student Brian Anderson. Nielson had intended to walk outside to tell the two students, "Knock it off",<ref name=timeline1 /> thinking they were either filming a video or pulling a student prank.<ref name=eyes/> As Anderson opened the first set of double doors, the gunmen shot out the windows, injuring him with flying glass; Nielson was hit in the shoulder with shrapnel. Anderson and Nielson ran back down the hall into the library, and Nielson alerted the students inside to the danger, telling them to get under desks and keep silent. She dialed [[9-1-1]] and hid under the library's administrative counter.<ref name=timeline1 /> Anderson fell to the floor, bleeding from his injuries, then hid inside the magazine room adjacent to the library.<ref>{{cite book |last1=Cashman |first1=John R. |title=Emergency Response Handbook for Chemical and Biological Agents and Weapons |date=2008 |publisher=CRC Press |location=Boca Raton, Florida |isbn=978-1-4200-5266-4 |page=53}}</ref>