Since having a dream about an unknown student in possession of hand grenades and guns setting the school on fire, a Collegiate High School student has been in fear of the possibility. “It was a dream I had after Del Mar was held on lockdown [in 2015, due to a gun threat] but it was scary to see the people that I love and care about dying, being afraid and crying,” said senior Hannah Heasley. However, the fear of gun-related violence has been a reality for many students. Since the school shooting at Columbine High School in 1999, more than…