(CNSNews.com) - An investigation into how a Marine sergeant serving in the Persian Gulf was able to keep her pregnancy secret from her superiors could eventually result in constructive changes for men and women in the armed services, a military watchdog group said Friday. The 33-year-old Marine, who gave birth to a healthy 7-pound boy aboard the amphibious ship USS Boxer in the Persian Gulf on May 23, allegedly told her superiors she did not know she was pregnant. How a pregnant Marine serving in Operation Iraqi Freedom managed to keep her condition secret struck some officials and observers as...