1.   As a result, the lab expanded a firebreak around its most vulnerable radioactive waste site, which protected it from the recent fire.

2.   Nor are storage facilities the only vulnerable sites.

3.   Afraid of Serb retaliation with heavy artillery, residents of Sarajevo piled sandbags in front of windows and other vulnerable sites Wednesday.

4.   Bracing for that, city residents Tuesday put more sandbags in front of windows and other vulnerable sites.

5.   Bracing for that, people within the city put more sandbags in front of windows and other vulnerable sites.

6.   On Tuesday, city residents piled more sandbags in front of windows and other vulnerable sites.

7.   Safety drills for residents near vulnerable sites.

8.   Sarajevo residents piled sandbags in front of windows and other vulnerable sites Wednesday.

9.   Sarajevans afraid of Serb retaliation with heavy artillery for any government offensive piled sandbags in front of windows and other vulnerable sites.

10.   Sarajevans afraid of Serb retaliation with heavy artillery piled sandbags in front of windows and other vulnerable sites.