WASHINGTON - Since the spring, long before an angry mom named Cindy Sheehan set up camp outside President Bush's Texas ranch, anti-war activists have been holding vigils outside Walter Reed Army Medical Center on Friday nights, when many soldiers and their families venture off campus for steak dinners. They've called for better health care benefits for soldiers wounded in Iraq, protested an early policy of making some soldiers buy their own meals while in care, and accused the military of purposely flying injured troops in under cover of night to downplay the volume of casualties. And they've waved signs protesting...