Amin Abdullah, a security guard at the Islamic Center of San Diego, was fatally shot while heroically attempting to protect worshippers during a tragic shooting incident on Monday. Alongside Abdullah, two other victims, Mansour Kaziha and Nadir Awad, were also killed by the assailants, aged 17 and 18. Authorities praised Abdullah's courageous actions, noting that he engaged the gunmen in a gun battle and successfully initiated a lockdown protocol, which likely saved many lives, particularly those of around 140 children present in the mosque. San Diego Police Chief Scott Wahl emphasized that Abdullah's bravery delayed the suspects' access to the larger areas of the mosque. The investigation into the shooting continues, with federal officials uncovering writings from the suspects that express a disturbing hatred towards various religions and races. Additionally, authorities have recovered 30 firearms and a crossbow from the homes of the alleged gunmen as part of their ongoing investigation.