Source: Huff Post, by David Lose.
Before you dismiss the question out of hand, consider these four inter-related bits of evidence:
1) As recently reported in the New York Times, military personnel who identify themselves as “Atheists” have requested chaplains to tend to their spiritual needs. As the Times article notes, “Defense Department statistics show that about 9,400 of the nation’s 1.4 million active-duty military personnel identify themselves as atheists or agnostics, making them a larger subpopulation than Jews, Muslims, Hindus or Buddhists in the military.” Having their own chaplains, the article explains, would give Atheists a sense of legitimacy and help validate their own system of values and beliefs.