Two journalists traverse the Grand Canyon by foot, hoping this 750-mile walk will help them better

understand one of America's most revered landscapes and the threats poised to alter it forever.

This short film looks at the purpose and methods of the U.S. Air Force, and the difficulties of getting along with civilian neighbors. The story involves members of an Air Force base proving their worth to the mayor of a nearby town who would like to see them gone due to noise pollution.

Silence just might be on the verge of extinction and acoustic ecologist Gordon Hempton believes that even the most remote corners of the globe are impacted by noise pollution. In Sanctuaries of Silence, join Hempton on an immersive listening journey into Olympic National Park, one of the quietest places in North America.