Assuming they reached top speed of 180 mph (265 f/s),
Assuming a rule of thumb for hard (not panic) braking deceleration of 15 fps/s, in that (265/15 =) 18 second stopping time, they needed about (265/2 X 18 =) 2400 feet
Wonder if a prior planning “brake point” was marked off for their run
with the runway 8300 feet, if a mile was marked of for their run, that would should have given enough for stopping