At its Mach 5 speeds, it was unwieldy, and would be unable to follow drastic last-minute maneuvers.

They headed across the expanse of desert at Mach speed.

Both prototypes flew a total of 56 test flights, with Mach 1.33 speeds being obtained.

"I will," he said, pulling away at Mach speed.

Max's mind worked at Mach speed, trying to correlate.

That is why you'll see that planes are rated for Mach speed at sea level as opposed to another altitude.

Austin's mind, which had been working at Mach speed, came to a screeching halt.

Price is battling his swing, which appears to be even quicker than his normal Mach 2 speed.

It was aerodynamically matched for peak performance at 50,000 feet (15,200 m) altitude and Mach 2 speed.

At high Mach speeds, heat can become so intense that metal portions of the airframe melt.