Comment: good Q: i am disregarding MSM pointers

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good Q: i am disregarding MSM pointers

at this time and instead, finding it interesting to select a character in the scene and follow their actions/movements thru the sequence.

the first that caught my eye is the guy sprinting, prominently, R to L, across the scene
in first 5 photos and thru out in background:
what kind of gear/rig /wires/ is he wearing attached to wrist /arm/knee/neck/back & front of chest?