Blythe Regan Jones Herrera, 31, was one of 21 people killed on July 18, 1984, when a gunman opened fire inside the McDonald’s in San Ysidro, California. She was at the restaurant with her husband, Ronald, and their 11-year-old son, Mateo, after a family trip to Ensenada, Mexico. Blythe reportedly tried to shield her son from the gunfire and was killed; her husband was wounded and their son also died in the massacre.

The shooter was identified as 41-year-old James Huberty. The attack lasted 77 minutes and ended when a police sniper shot and killed Huberty. No other suspects were identified.

Several victims families, including Blythe’s, filed lawsuits against McDonald’s alleging inadequate security.