Gemini 11 Launch / AS 500F on Pad 39A

From the NARA - footage is seemingly filmed in extra widescreen format
Description in NARA is "Footage From Project Mercury Launch"

I believe footage shows Gemini 11 crew walkout to transfer van, press site
on the launch day, crew training for emergency egress from LC19, the
Gemini 11 Agena pre-launch, footage of the Gemini 11 launch which is
followed by views of a truck (smoke purpose unknown - chemical?) and
views of the Apollo/Saturn 500F on launch pad 39A.
Of all the footage I have found on the NARA site, this one is definitly "different".
Comments welcomed on what your thoughts are - great footage though!
Audio is NBC radio coverage of the Gemini 11 launch.

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