James Huberty

The San Ysidro McDonald’s massacre was an incident of mass murder that occurred on July 18, 1984, in a McDonald’s restaurant in the San Ysidro section of San Diego, California, United States. The shooting spree resulted in 22 deaths (including the perpetrator James Oliver Huberty) and the injuries of 19 others. On the day before the massacre, Huberty had called a mental health center. The receptionist misspelled his name on intake as “Shouberty”. Since he had not claimed there was an immediate emergency, his call was not returned.
Source: Wikipedia