WASHINGTON, Sept. 4 -- The U.S. Department of War issued the following news: * * * Exercise Urgent Response Tests Marine Corps Installation Partnerships * Simulated gunfire interrupted the workday inside an occupied office building yesterday as service members, civilian employees and contractors at Marine Corps Support Facility Blount Island, Florida, faced a split-second decision: run, hide or fight. The attack was part of Exercise Urgent Response, a four-hour, full-scale force protection   more