Milwaukee County Sheriff David Clarke has advised residents in a new PSA that they should consider taking a firearm safety course to defend themselves in a crisis as they wait for police to arrive.
Gary Porter/AP/Milwaukee Journal-Sentinel
President Obama shakes hands with his nominee to head the Defense Department, former Sen. Chuck Hagel, at the White House on Jan. 7. John Brennan, Obama's choice for director of the CIA, looks on.
Alex Wong/Getty Images
U.S. troops in Afghanistan appear to have mixed feelings about the decision lifting the ban on women in combat positions. Some women already operate in combat zones. Hospital Corpsman Shannon Crowley is shown here with her Marine Corps team in Musa Qala, Afghanistan, in November 2010.
Paula Bronstein/Getty Images