正准备大规模枪击。
Authorities found 23 firearms along with ammunition when they arrested a 13-year-old boy who allegedly had "school shooter ideations" in his Washington state home last week. - Pierce County Sheriff’s Office
When police arrested a 13-year-old boy in Washington state last week accused of making threats to kill, they found he had “everything ready to go to commit a mass shooting” – including a trove of more than 20 guns in his home.