Hey Ridley, that Machometer ...

Hey Ridley, that Machometer is acting screwy. It just went off the scale on me.
 Chuck Yeager

Quotes from the same author

You don't concentrate on risks. You concentrate on results. No risk is too great to prevent the necessary job from getting done.
 Chuck Yeager
At 42,000' in approximately level flight, a third cylinder was turned on. Acceleration was rapid and speed increased to .98 Mach. The needle of the machmeter fluctuated at this reading momentarily, then passed off the scale. Assuming that the off-scale reading remained linear, it is estimated that 1.05 Mach was attained at this time.
 Chuck Yeager