Which door did Booth enter?

[L Verge]

Dr. John K. Lattimer was a 20th-century medical doctor, highly ranked in the medical field, very experienced with WWII soldiers' wounds as a field doctor, a doctor at the Nuremberg Trials, practitioner to the famous (Garbo, Monroe, and others), first civilian doctor to be allowed to investigate the forensic aspects of the Kennedy assassination - at the request of the Kennedy family - etc. Dr. Lattimer passed away in 2007, leaving an extensive collection of assassination memorabilia in addition to other oddities. I was fortunate to know him and respect his work (for the most part).

In our field, he was well-known for his extensive ballistics' examinations related to the Lincoln assassination and wrote a book on comparisons between the Lincoln and Kennedy crimes. Some of his findings are being challenged, however, by others with not as much medical experience as his.

Should or do investigators consider the element of surprise that assassins count on? To me, that is one of the greatest attributes that Booth had in making a successful entry, head shot, and escape.