Photos: How the Army tests biological and chemical weapons

In a display case in one building at the Dugway Proving Grounds, a U.S. Army facility in the Utah desert that researches ways to protect soldiers against chemical and biological weapons, a rubber duck wearing a gas mask provides a little light-hearted humor in an otherwise serious environment.

CNET News reporter Daniel Terdiman visited the Dugway Proving Grounds as part of his Road Trip 2009 project.

Photo by Daniel Terdiman/CNET