DEAR EDITOR:

Fred Johnson’s column on the Chinese rocket threat in the Oct. 28 issue contains a ridiculous statement which I am pretty sure is a printing error.

He stated that the new hypervelocity missiles are “five times the speed of sound which is approximately 40,000 miles per hour.”

In reality, since the speed of sound is about 750 mph at sea level, five times the speed of sound would of course be about 3,750 miles per hour not 40,000 mph.

George H. West,

Madison

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