Why are breast cancer rates so high among US troops?

In Marine Times, a Gannett newspaper targeting people in the Marine Corps and their families, an article for "Pinktober" (pink-ribbonny breast cancer awareness month, bleargh) about the high rate of breast cancer among men and women in the military. There are a number of theories as to why the breast cancer rates are so high, and a cluster of the disease affecting males at Camp Lejeune are a particularly vexing science mystery. "Researchers with the CDC are preparing a study that will try to determine whether contaminated drinking water at the Marine Corps' largest base on the East Coast caused dozens of male Marines, sailors and family members to get breast cancer." Read more: Alarming breast cancer rates among troops (Marine Corps Times). Mother Jones covered this in a recent issue, also.