“Andrea Rebello lived with her twin sister in an off-campus house in Uniondale, New York. A male suspect wearing a black ski mask forced his way into the residence, which the sisters shared with two other students,” cnn.com reports. “At some point during the night, the twins’ female roommate was able to leave the home and call police . . . When police arrived, there was an exchange of gunfire that left Andrea and the suspect dead. Police say the source of the gunfire that killed Rebello is still under investigation.” Sure, the bad guy shot a hostage before the cops ventilated him. Anyway, Ms. Rebello’s death is a reminder to us all that it’s best to take care of your own self-defense before the police arrive. Firearms are good that way. Home carry people. Home carry.