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In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Story highlights Witness: Shooter yelled, "Why are you laughing at me?" 
  
 "There's a kid with a gun," student tells 911 dispatchers 
  
 Slain teacher served in Kuwait and Afghanistan with the Air National Guard 
  
 The two wounded students were in stable condition with non-life-threatening wounds, police say 
  
 "This is a student at Sparks Middle School. Can you please send police out here? There's a kid with a gun." 
  
 "Somebody brought a gun to school. They shot a teacher." 
  
 "I got a kid down who's been shot." 
  
 As police tried to piece together how and why a seventh-grader shot and killed a teacher and wounded two other students at his Nevada school, recordings of the first calls to police captured the horror and chaos he unleashed. 
  
 The 12-year-old boy, whose name has not been released, began by shooting a fellow student in the shoulder, police said Tuesday. Then he turned his gun on math teacher Mike Landsberry before shooting a second student in the abdomen, Washoe County School District Police Chief Mike Mieras said. 
  
 JUST WATCHED Teacher died trying to stop shooter Replay More Videos ... MUST WATCH Teacher died trying to stop shooter 05:23 
  
 JUST WATCHED Witness: Shooter yelled during rampage Replay More Videos ... MUST WATCH Witness: Shooter yelled during rampage 03:34 
  
 JUST WATCHED 911 caller: 'They shot a teacher' Replay More Videos ... MUST WATCH 911 caller: 'They shot a teacher' 02:41 
  
 JUST WATCHED Victim's brother: He loved teaching Replay More Videos ... MUST WATCH Victim's brother: He loved teaching 02:21 
  
 After that, he shot himself to death with his pistol, which Sparks Deputy Police Chief Tom Miller identified as a Ruger 9mm semiautomatic. 
  
 "We got a guy with a gun. He's down from a head shot wound. Could be our shooter," one of the responding officers is heard telling dispatchers on the 911 calls. "He's out there on the basketball court." 
  
 Landsberry walked toward the shooter on a playground basketball court after the first student was hit, saving lives, according to authorities. 
  
 JUST WATCHED Teacher dead in Nevada school shooting Replay More Videos ... MUST WATCH Teacher dead in Nevada school shooting 02:19 
  
 "Mr. Landsberry's heroic actions, by stepping toward the shooter, allowed time for other students in the playground area to flee," Mieras said. 
  
 Despite previous reports indicating the two wounded students had been shot inside the school building, all the shots were fired outside, police said. 
  
 Miller, who said earlier on CNN's "New Day" that it wasn't yet clear if the boy was targeting specific people, declined to identify the boy out of respect for his family. 
  
 "They are grieving parents and are going through" a challenging, difficult time, Miller said. 
  
 'I think he took out his bullying' 
  
 Authorities haven't said why they believe the boy opened fire. 
  
 Many have speculated that bullying might have played a role, 13-year-old Kyle Nucum told CNN's "The Lead." 
  
 That could be the case, said Nucum, a student at Sparks Middle School who didn't know the shooter but ran for cover after seeing him shoot Landsberry. As he fled, he heard the shooter shouting. 
  
 "He was yelling a bunch of things while we were running," Nucum said. "He was yelling stuff like, 'Why are you laughing at me? Why are you doing this to me?'" 
  
 JUST WATCHED 911 tapes in Nevada school shooting Replay More Videos ... MUST WATCH 911 tapes in Nevada school shooting 03:04 
  
 JUST WATCHED Mayor: Teacher was very well liked Replay More Videos ... MUST WATCH Mayor: Teacher was very well liked 01:37 
  
 JUST WATCHED Student: Nevada shooter was bullied Replay More Videos ... MUST WATCH Student: Nevada shooter was bullied 01:36 
  
 Before Monday morning, the boy seemed like the antithesis of a school shooter. 
  
 "He was really a nice kid," schoolmate Amaya Newton said. "He would make you smile when you were having a bad day." 
  
 But for whatever reason, the boy took his parents' handgun to school, a federal law enforcement source said. Miller said Tuesday that authorities aren't positive where the gun came from, but believe it belonged to the boy's parents. 
  
 Amaya said she thought the two wounded students were friends of the shooter. They were in stable condition with non-life-threatening injuries Monday night, Miller said. 
  
 Authorities have not released the wounded boys' names. 
  
 Investigators haven't determined what prompted the shooting. Miller said only that police are exploring all avenues. 
  
 Amaya said she "saw him getting bullied a couple of times, and I think he took out his bullying." 
  
 Surviving Afghanistan, but not school 
  
 The teacher who died, Mike Landsberry, appeared to be trying to stop the incident when he was shot dead, Miller said Tuesday. 
  
 "It almost appears like he tried to talk him down," he said. 
  
 Slain Nevada teacher 'put his life on the line' 
  
 True to his character, the former Marine, a popular math teacher at Sparks Middle School, rushed to help others when the shots erupted. 
  
 "That was the kind of person that Michael was," said his brother, Reggie Landsberry. "He was the kind of person that if somebody needed help, he would be there." 
  
 Landsberry was an Alabama native who graduated from high school in Reno, next door to Sparks, in 1986. After his stint in the Marine Corps, he got an education degree from the University of Nevada in Reno. He joined the Air National Guard in 2001, rising to the rank of master sergeant and serving as a cargo specialist in Kuwait and Afghanistan, the Guard said. 
  
 A Facebook memorial page for the teacher had more than 10,000 "likes" by early Tuesday. Thousands more honored him on a "Rest Easy Mr. Landsberry" page. 
  
 Teacher killed in Nevada school shooting was 'good all-around guy' 
  
 Returning to a national debate 
  
 The Nevada shooting comes almost a year after a gunman killed 26 people at Sandy Hook Elementary School in Newtown, Connecticut, igniting a nationwide debate over gun violence and school safety. 
  
 Since the Newtown shootings last December, proposed school security plans across the country have included arming teachers, adding armed security guards and bringing in bulletproof backpacks and white boards. 
  
 Some teachers have started taking self-defense and combat classes in case a shooter enters their school. One class teaches how to escape or take cover but focuses most of its four hours on how to fight and disarm an attacker -- something few educators have ever considered how to do. 
  
 Meanwhile, reports of school violence have continued. 
  
 Last week, a student at an Austin, Texas, high school killed himself in front of other students. 
  
 In August, a student at a high school in Winston-Salem, North Carolina, shot and wounded another student in the neck. 
  
 Another shooting took place at an Atlanta-area middle school in January, though no one was hit. 
  
 That same month, a California high school student wounded two people, one seriously. 
  
 Teachers train to face school shooters 
  
 The mother of a student killed in Newtown said Monday's shooting reinforces the need to find solutions to keep students safe. 
  
 "The unthinkable has happened yet again, this time in Sparks, Nevada," Nicole Hockley said in a written statement. "It's moments like this that demand that we unite as parents to find common sense solutions that keep our children -- all children -- safe, and prevent these tragedies from happening again and again." 
  
 But what those solutions are will remain fuel for ongoing debate. ||||| Sparks Middle School student: Gunman said "you ruined my life and now I'm going to ruin yours" 
  
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 Jimi Hendrix: How much is known about the rock icon? 
  
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 (CBS News) Michael Landsberry, a Sparks Middle School math teacher and soccer coach, is being called a hero. Authorities said he gave his life to protect his students, when one of their classmates started shooting Monday. Two other students remain hospitalized and are expected to survive. 
  
 At least one witness has pointed to revenge being a possible motive. 
  
 "He pointed to us and he said, 'You ruined my life and now I'm going to ruin yours,'" said Alfrancis de Vera, a student at Sparks Middle School. 
  
 After shooting Landsberry and two other classmates, the student turned the semi-automatic handgun on himself and was killed. Federal officials tell CBS News the gun was owned by his parents. 
  
 "I just heard this bang and I thought it was a joke," said student Adam Ramierez. "Then I saw people running." 
  
 The two 12-year-old victims were rushed to local hospitals. 
  
 "One was shot through the shoulder. The other shot in the abdomen. Both sustained non life-threatening injuries," said Sparks Police Department Deputy Chief Tom Miller. 
  
 Students and their parents remembered Landsberry, a 45-year-old military veteran, Monday night. 
  
 "He was tough, but he had a really soft heart," said 14-year-old Jeremy Hannah. "That's why he became a teacher." 
  
 Police say Landsberry died trying to intervene and students took to Twitter to praise their fallen teacher. 
  
 One student said "Mr. Landsberry was an amazing teacher with a good heart," and another "Landsberry, forever my favorite coach." 
  
 Even Sen. Harry Reid chimed in: "Michael Landsberry: Veteran, wonderful math teacher, admired by students, died a hero." 
  
 Landsberry leaves behind a wife and two stepdaughters. He served two tours in Afghanistan with the Nevada National Guard. The school will remain closed for the rest of the week. |||||
Output:
Police still haven't released the name of the young shooter who wounded two 12-year-olds and killed a teacher at Sparks Middle School in Nevada yesterday before turning his parents' gun on himself, but a classmate describes him to CNN as "really a nice kid. He would make you smile when you were having a bad day." But, she says, she saw him getting bullied "and I think he took out his bullying." She thinks the two wounded students were his friends, but police say it's too early to know whether he was targeting anyone. Another classmate tells CBS News the shooter "pointed to us and he said, 'You ruined my life and now I'm going to ruin yours.'" Mike Landsberry, the teacher killed when he tried to intervene, "was the kind of person that if somebody needed help, he would be there," says his brother. He was a popular teacher—two Facebook pages in his honor have thousands of "likes"—and apparently a popular stepdad as well. Paradise Post has a heartbreaking screenshot of a message his stepdaughter posted on Facebook in August, in which she calls him "Dad" and says she'll "always love him"; Landsberry responded, "You are my girl." The two students who were shot, one in the shoulder and one in the abdomen, are expected to survive. A candlelight vigil is planned for tomorrow, the Reno Gazette-Journal reports.