<http://www.isiomajohn.com/trace-icing-is-the-sum-of-the-elements/>
<http://schema.org/description>
"The Insidious Nature of Aircraft Icing - In the mid 1950’s, a pilot learning to fly in Eastern Washington state seldom worried about ice."
<http://www.isiomajohn.com/trace-icing-is-the-sum-of-the-elements/>