Try to post facts instead of urban legend and hearsay.
Try to understand Lovelady's coworkers talked to him while they watched the motorcade.
The first book recommended on the website that you downloaded the picture from is "Six Seconds In Dallas".
Link:
http://mcadams.posc.mu.edu/books.htm
You should read this book with an open mind. It is by the way the first book I read on the subject.
I think the building next door was at the time the Dallas Police Headquarters.
Also, if memory serves me at this time LHO took the rifle into the building 2 weeks before Kennedy came to Dallas. No big deal except they didn't announce the route he was to take until the day before his visit, November 21st.
And to all, if I am or was duped, I will be the first to admit it, how about you?