Diamond Heist Spurs Drive to Plug Vulnerable Airport Perimeters

Diamond Heist Spurs Drive to Plug Vulnerable Airport Perimeters

Bruno Fahy/AFP/Getty Images

A picture shows fences surrounding Brussels International Airport in Zaventem, Belgium on Feb. 19, 2013. The Brussels gunmen forced their way through the airport fence at a place where two work sites obstructed a clear view, the Associated Press reported.