In the “Go Fast” video when the object tracking starts 2 figures instantly appear on the MFD video screen these are:
RNG and V/C
which are thought to show range in nautical miles and closing velocity in knots.
These figures were claimed by the TTSA to be the range and closing velocity from the jet to the object, this seems to make sense and other information on the display has been confirmed to be accurately identified by TTSA from various sources.
https://thevault.tothestarsacademy.com/2015-go-fast-footage
This figure was used along with altitude and angle of deflection of the ATLFIR camera to determine that object was at ~13000 feet ... Read even more
