Summers shows in the first video where he ran across Elm Street and was stopped by the man with the hat (who I believe was Jean Rene Souetre per Lois Gibson's sketch), near the east side of the pergola apparently:
https://www.youtube.com/watch?v=MVi1qBl8dR8
Lois Gibson sketched the man Malcolm Summers saw and was stopped by with a gun under his coat arm and I believe that man is Jean Rene Souetre, wearing a fedora:
https://jfkcountercoup.blogspot.com/2009/12/man-on-grassy-knoll.html?m=0
It seems Summers did not run up the steps near the west side of the pergola as shown in this second video:
https://www.youtube.com/watch?v=zwkzoRHBois
Also the man in a suit apparently floated as the man who stopped Summers with a gun under his coat arm was clearly wearing a Stetson, not a fedora.
I'll go with Malcolm Summers showing where he went in the first video.
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)