Not exactly sure what you're asking, but you may be talking about the bailiff. A bailiff isn't a police officer, at least not locally to me, but he is the court appointed officer.
Additional: The duties of the uniformed officer(s) stationed in a court room is to maintain security, keep order, guard prisoner-defendants, attend to the jury, and supply judicial protection. These officers are known by the title of BAILIFF. They usually possess the powers of law enforcement officers in their jurisdiction, and are usually uniformed. Although they resemble police - as noted above - in some places this duty is not customarily performed by sworn police officers. Rather it can be performed by civilian employees of the court system - or, (in many other jurisdictions) by Deputy Sheriff's - or even State Marshalls.
Depends on the department. Legally up to the day of court.
In almost every state it doesn't matter. It's not a speeding ticket, you aren't going to get out of it because the cop doesn't show up. All they need is his report, but he most likely will show up for that. Either way it doesn't matter whether he is there or not. You will most likely get pre-trial diversion if you don't have any priors.
Court cases are a public record - anyone can look at them (unless the case is currently active). Go to the Clerk of the Court's office at the courthouse and reqeust to look at the case file.
Your State Court or Federal court have jurisdiction to hear the case of medical negligence.
File a motion with the court requesting it.
Anyone can be called to court to be a witness, including a resigned cop.
He can try, but with no proof, he will lose the case. They usually don't go to trial with no proof.
A Trial
The issue
If the US Supreme Court is the first to hear a case, the Court has original jurisdiction.
A court case brought from a lower court to a higher court is called an appeal. In an appeal, the higher court reviews the decision made by the lower court to determine if any errors were made in applying the law.
It is called a remand.
a lawsuit
Claims
The suspect
The officer is the key witness, the case would be canceled.
The judge in a Roman court case is called praetors (PREE-tuhrz).