Which of the following is NOT a responsibility of a court officer in maintaining courtroom security?

Conducting legal research for the judge is not a responsibility of a court officer in maintaining courtroom security. Court officers are primarily focused on ensuring a secure environment within the courtroom, which entails tasks such as controlling access to the courtroom, monitoring for suspicious activity, and responding to disturbances. These duties are critical for maintaining order and safety during court proceedings.

Legal research, on the other hand, is typically the responsibility of judges, law clerks, or attorneys who prepare cases for court. Their roles require different skill sets and functions that are not aligned with the primary objectives of a court officer. Thus, while a court officer plays a crucial role in the courtroom dynamics, their responsibilities do not extend to legal research.