21.   An Israeli raid in the West Bank city of Ramallah killed three Palestinian security officers, Palestinian officials said.

22.   And a security officer is present to answer their questions.

23.   An White House national security officer told how she was pressured by top party officials to approve a presidential visit for a large donor.

24.   And beginning on Wednesday morning, extra security officers were on duty throughout the subway system.

25.   Another American security officer, Larry Salmon, was wounded by either flying glass or shrapnel but did not require hospitalization, Krueger said.

26.   Another security officer handcuffed the student and took him to the dean.

27.   Anyone with access to the tarmac must wear a badge at all times and Port Authority security officers patrol the area.

28.   Apache attack helicopters accompanied his helicopter into the city, as well as several heavily armed troops and security officers.

29.   Argentine television later showed his wife and children being turned away from the doors of the palace by security officers.

30.   As a result, the robots were being underused by security officers.