Google Books: Focus On the Book, The UFO Cover-Up: What the Government Won’t Say

The book is written by Lawrence A. Fawcett and Barry J. Greenwood.

https://books.google.no/books?id=IUApi6OdtCUC&printsec=copyright&redir_esc=y#v=onepage&q=%22Helicopter%22&f=false
(Search term: “Helicopter”)

https://books.google.no/books?id=IUApi6OdtCUC&printsec=copyright&redir_esc=y#v=snippet&q=%22Helicopters%22&f=false

(“Helicopters”)

Related post:

realtvufos.blogspot.com/2017/05/google-website-searches-focus-on-ufo_24.html

(google.com image)