11.   International observers have called for calm, worried that a very tight race and prolonged vote-count could lead to street demonstrations and possible violence.

12.   Nordwall said last month that additional federal law-enforcement officers had been placed on stand-by to deal with possible violence on the reservation.

13.   Opponents of Buchanan have no real candidate to oppose him and have begun warning of credentials challenges and possible violence at the convention.

14.   Police officers will be at the airport to deter possible violence, Shapiro said.

15.   Robert Bertuglia Jr., the president of the Laro company, said he had no fear of possible violence when his company takes over the unloading duties.

16.   Seeking to quell fears of possible violence, Cullen said he has ordered extra police patrols around the estate.

17.   Rumors of possible violence are spreading, and local media outlets have issued gas masks to their reporters.

18.   Some of the protesters accused the media of sympathizing with Castro, and riot police warned reporters of possible violence directed at them.

19.   Sometimes, Moody arms himself as protection against possible violence.

20.   The presence of security officials was stepped up in anticipation of possible violence.