On Father’s Day, June 18, 2023, a domestic dispute in Kellogg, Idaho, ended with four people shot to death at a West Brown Avenue duplex. Victims identified were 65-year-old Kenneth Guardipee, his 41-year-old daughter Kenna Guardipee, and her two sons, 18-year-old Devin Smith and 16-year-old Aiken Smith. They lived upstairs from 31-year-old Majorjon Kaylor, who was detained at the scene.

Investigators tied the shooting to an ongoing conflict between the neighbors. Kaylor told authorities he had “snapped” and later confessed to the killings; police said his wife had earlier accused Devin Smith of exposing himself, and that prosecutors had not filed the recommended misdemeanor against Smith. Kaylor was charged in the deaths; the prosecuting attorney’s office announced it would not seek the death penalty. Family members at sentencing remembered Kenneth as a recent retiree who enjoyed time with family, Kenna as a hardworking single mother, Aiken as a junior ROTC student with military aspirations, and Devin as someone receiving family support for mental health challenges.