The extensive coverage of the Tate–LaBianca murders at 10050 Cielo Drive, Benedict Canyon, Los Angeles may also have had a galvanising effect in the Zodiac Killer's switch to a more hands-on approach at Lake Berryessa on September 27th 1969. However, the Zodiac Killer would intimate his involvement in the Snoozy & Furlong many times by the close of 1971, yet would not reference the Manson murders once. This suggests that the driving force was predominantly the murders of Snoozy & Furlong in San Jose on August 3rd 1969.
Government Official means any officer, employee or other individual acting in an official capacity for a Governmental Authority or agency or instrumentality thereof (including any state-owned or controlled enterprise). This may explain the Zodiac Killer's use of the phrase "government life" in his letter. It appeared that the Fairfield letter was specifically responding to this newspaper article - both of which corresponded to one date. Susan Denise Atkins (21), one of six persons charged with the Tate-LaBiaca murders, provided information to police where they could find items of disposed bloody clothing related to the Cielo Drive attack, detailed in the article as "A station spokesman said the clothes, stained with what appeared to be blood and knotted in a bundle were turned over to police". I have highlighted these below in reference to the Zodiac Killer's statement of "look for more blood" in the Fairfield letter. The police were effectively dispatched to look for items of clothing stained with blood in the Tate-LaBianca slayings, to which Zodiac suggested there would be more blood in future for police to find.