Editing Columbine High School massacre (section)

==Weaponry==
=== Guns ===
In the months prior to the attacks, Harris and Klebold acquired two [[9×19mm Parabellum|9mm]] firearms and two [[Gauge (bore diameter)|12-gauge]] shotguns. Harris had a [[Hi-Point carbine|Hi-Point 995 carbine]] with thirteen 10-round magazines and a [[Savage Arms#Shotguns|Savage-Springfield 67H]] [[Pump action|pump shotgun]]. Klebold used a 9mm [[Intratec]] [[TEC-9|TEC-DC9]] [[Semi-automatic firearm|semi-automatic]] [[handgun]] with one 52-, one 32-, and one 28-round magazine and a [[Stevens Arms#Shotguns|Stevens 311D]] [[double-barreled shotgun]]. Harris' shotgun was [[sawed-off shotgun|sawed-off]] to around {{convert|26|in|m}} and Klebold shortened his shotgun's length to {{convert|23|in|m}}, a [[felony]] under the [[National Firearms Act]].<ref>{{cite web |url=http://www.vpc.org/studies/wgun990420.htm |title=Where'd They Get Their Guns? – Columbine High School, Littleton, Colorado |website=vpc.org |archive-url=https://web.archive.org/web/20161217001607/http://www.vpc.org/studies/wgun990420.htm |archive-date=December 17, 2016 |url-status=live |access-date=February 6, 2017}}</ref><ref>Columbine Report, {{cite news |url=http://www.cnn.com/SPECIALS/2000/columbine.cd/Pages/EQUIPMENT_TEXT.htm |title=How they were equipped that day |date=May 15, 2000 |archive-url=https://web.archive.org/web/20091202153237/http://www.cnn.com/SPECIALS/2000/columbine.cd/Pages/EQUIPMENT_TEXT.htm |archive-date=December 2, 2009 |url-status=live |access-date=June 6, 2018}}</ref>
On November 22, 1998, their friend Robyn Anderson purchased a carbine rifle and the two shotguns for the pair at the Tanner [[Gun show|Gun Show]], as they were too young to legally purchase the guns themselves. After the attack, she told investigators that she had believed the pair wanted the weapons for [[target shooting]] and denied that she had prior knowledge of their plans.<ref name="auto">{{Harvnb|Klebold|2016|p=84}}</ref> Anderson was not charged.<ref>{{cite news |first=Dan |last=Luzadder |date=October 3, 1999 |url=http://denver.rockymountainnews.com/shooting/1003robyn.shtml |title=Loophole protects Columbine 'witness' |newspaper=[[Rocky Mountain News]] |archive-url=https://web.archive.org/web/20010221030107/http://denver.rockymountainnews.com/shooting/1003robyn.shtml |archive-date=February 21, 2001}}</ref><ref>{{cite news |url=http://www.cnn.com/US/9908/18/columbine.manes/index.html |title=Gun provider pleads guilty in Columbine case |date=August 18, 1999 |publisher=CNN |access-date=June 26, 2018 |archive-url=https://web.archive.org/web/20171125215205/http://www.cnn.com/US/9908/18/columbine.manes/index.html |archive-date=November 25, 2017 |url-status=live}}</ref>{{efn|The Jeffco Final Report explained "No law, state or federal, prohibits the purchase of a [[long gun]] ([[rifle]]) from a private individual (non-licensed dealer)...If Anderson had purchased the guns from a federally licensed dealer, it would have been considered a "[[straw purchase]]" and considered illegal under federal law."<ref name=coat>Columbine Report, {{cite web |url=http://edition.cnn.com/SPECIALS/2000/columbine.cd/Pages/MAFIA_TEXT.htm |title=The Trench Coat Mafia & Associates |date=May 15, 2000 |archive-url=https://web.archive.org/web/20171204180405/http://edition.cnn.com/SPECIALS/2000/columbine.cd/Pages/MAFIA_TEXT.htm |archive-date=December 4, 2017 |url-status=dead |access-date=June 26, 2018}}</ref>}}

Harris and Klebold both held part-time jobs at a local [[Blackjack Pizza]]. Through Philip Duran, one of their coworkers, Klebold bought a TEC-9 handgun from Mark Manes for $500 at another gun show on January 23.<ref name=Fatal/><ref>{{cite news |url=http://extras.denverpost.com/news/col0624.htm |title=Duran gets 4 1/2-year term |last=Pankratz |first=Howard |date=June 24, 2000 |newspaper=[[The Denver Post]] |access-date=October 15, 2014 |archive-url=https://web.archive.org/web/20150312123352/http://extras.denverpost.com/news/col0624.htm |archive-date=March 12, 2015 |url-status=live}}</ref> Manes, Manes' girlfriend, and Duran are all in the Rampart Range video.<ref name="Fatal" /><ref>{{cite web |url=http://www.acolumbinesite.com/rampart.html |title=Rampart Range video quotes and screenshots |last=Shepard |first=C |website=acolumbinesite.com}}</ref> After the massacre, Manes and Duran were both prosecuted.<ref>{{cite news |url=http://news.bbc.co.uk/2/hi/americas/518610.stm |title=Columbine gun supplier jailed |work=BBC News |date=November 13, 1999 |access-date=October 15, 2014 |archive-url=https://web.archive.org/web/20111030184551/http://news.bbc.co.uk/2/hi/americas/518610.stm |archive-date=October 30, 2011 |url-status=live}}</ref><ref>{{Harvnb|Cullen|2009|pp=167–168, 285–286}}</ref> Each was charged with supplying a handgun to a minor and possession of a sawed-off shotgun. Manes and Duran were sentenced to a total of six years and four-and-a-half years, respectively, in prison.<ref name="hist" /><ref name="auto1"/>

=== Explosives ===
In addition to the firearms, the complex and highly planned attack involved several [[improvised explosive devices]]. Harris and Klebold constructed a total of 99 bombs.<ref name="bombsum">{{cite web |series=Columbine Report |publisher=Sheriff's Office, Jefferson County, Colorado |via=CNN |date=May 15, 2000  |url=http://edition.cnn.com/SPECIALS/2000/columbine.cd/Pages/BOMBS_TEXT.htm |title=Bomb Summary |archive-url=https://web.archive.org/web/20160218120916/http://edition.cnn.com/SPECIALS/2000/columbine.cd/Pages/BOMBS_TEXT.htm |archive-date=February 18, 2016 |url-status=dead |access-date=April 15, 2015}}</ref> These included [[pipe bomb]]s, [[Powerlet|carbon-dioxide cartridges]] filled with [[gunpowder]] (called "crickets"<ref>{{cite web |url=https://slate.com/news-and-politics/2009/04/columbine-killer-eric-harris-plans-the-massacre.html |title=Columbine killer Eric Harris plans the massacre |last=Cullen |first=Dave |date=April 16, 2009 |magazine=[[Slate (magazine)|Slate]] |access-date=October 16, 2018 |ref=none}}</ref>), [[Molotov cocktails]], and [[Propane|propane tanks]] converted to [[propane bomb|bombs]]. The propane bombs were used in the cafeteria, the shooters' cars, and in another location intended as a diversion. For ignition, they used storm matches, cannon fuses, and [[model rocket]] igniters as well as [[Time bomb|timing devices]] built from mechanical alarm clocks for the propane bombs.<ref>{{cite web |url=https://schoolshooters.info/sites/default/files/Columbine_report_Homeland_Security.pdf |title=Wanton Violence at Columbine High School |page=27}}</ref> During the massacre, they carried match strikers taped to their forearms for easy ignition of the pipe bombs and {{CO2}} bombs.

Harris also experimented with [[napalm]], and envisioned a kind of backpack and [[flamethrower]]. They both attempted to get another friend and coworker, Chris Morris, who was a part of the Trench Coat Mafia, to keep the napalm at his house, but he refused. Harris also tried to recruit him to be a third shooter but played it off as a joke when rebuked.<ref>{{Harvnb|Cullen|2009|pp=330–331}}</ref>

==== Pipe bombs ====
Harris's website contained instructions on making pipe bombs and Molotovs, and the extensive use of [[Fragmentation (weaponry)|shrapnel]].<ref name=guard/> Harris's father once discovered one of his pipe bombs.<ref>{{Harvnb|Kass|2009|pp=159–161}}</ref> Harris's journal logged the creation of 25 pipe bombs.<ref name=bombsum />

Klebold scared his coworkers by once bringing a pipe bomb into work.<ref name=Fatal /> They would give various nicknames to their pipe bombs. After the massacre, two pipe bombs had been left in Klebold's bedroom, one named "Vengeance" and another "[[Atlanta]]", presumably after the [[Centennial Olympic Park bombing|Olympic Park bombing]].<ref name=bombsum /><ref>{{Harvnb|Kass|2009|p=66}}</ref><ref>{{cite web |url=http://www.acolumbinesite.com/evidence/ev3.jpg |title=Index of Evidence Released |website=acolumbinesite.com}}</ref>

====Cafeteria bombs====
They had in their possession eight propane tanks all converted into bombs. The weekend before the shooting, Harris and Klebold bought two propane tanks and other supplies from a hardware store. They bought six propane tanks on the morning of the attack.<ref>{{Harvnb|Cullen|2009|p=40}}</ref> Harris was caught on a [[Texaco]] gas station security camera at 9:12&nbsp;a.m. buying a [[Blue Rhino]] propane tank.<ref>{{Harvnb|Krabbé|2012|p=295}}</ref> Both cafeteria bombs included a single 20-pound tank, attached pipe bombs, and supporting gasoline canisters alongside.<ref name="guidebomb">{{cite web |url=https://www.columbine-guide.com/columbine-bombs |title=The Bombs: The Columbine Guide |website=The Columbine Guide}}</ref>

====Car bombs====
Both car bombs were made from two 20-pound propane tanks, pipe bombs, and various containers filled with gasoline were spread throughout the vehicles.<ref name="guidebomb"/> Eight pipe bombs were placed in Klebold's car, and one in Harris'.<ref name=bombsum/>

=== Knives ===
Harris and Klebold were both equipped with knives, but investigators do not believe they used them during the massacre. Harris had a [[boot knife]] on his belt and a "Khyber-pass" [[machete]] [[bowie knife]] taped to the back of his ankle. Both had an "R", referencing Harris's alias "REB", etched into the handle, and the machete had a [[swastika]] on the sheath. Klebold had a "Cobra" knife mounted to his belt on the left side as well as a [[switchblade]] in his right pocket.<ref>{{cite web |url=http://www.acolumbinesite.com/evidence.php |title=Columbine High School shooting evidence exhibit |first=C |last=Shepard |website=acolumbinesite.com}}</ref>