Preparing for & Testifying in Court

The Guard as Witness

A security guard who observed an incident, preserved the scene, or documented it in a notebook is likely to be called as a witness by the Crown. The guard's testimony is often the foundation of the prosecution's case — the guard is the person who can connect the incident report, the scene, and the accused.

Witnesses give evidence under oath or by solemn affirmation. Before testifying, the witness swears or affirms that the evidence they are about to give is the truth. Perjury — knowingly making a false statement while under oath — is a criminal offence in Canada, punishable by imprisonment. The seriousness of the oath is the reason the rules of testimony are so strict.

Before You Get to Court: Preparation

Good testimony begins long before the witness box. Preparation includes:

• Review your notebook and incident reports beforehand. Read them carefully and re-familiarize yourself with the sequence of events, the descriptions you recorded, and the times. Do not memorize a script — you will sound rehearsed and will struggle when questions vary — but know your own record cold.
• Know the facts and stay within them. Identify what you personally saw, heard, and did, as opposed to what you were told or what you inferred. You will be asked to distinguish these on the stand.
• Meet with the Crown, if offered. The Crown may arrange a pre-court meeting to review what you will be asked. This is permitted and is not "coaching" — you are not being told what to say, only what questions will be put.
• Dress professionally. A conservative, clean appearance signals respect for the court and supports your credibility. A uniform, if required by your employer, is usually appropriate; otherwise, business attire.
• Arrive early. Courts keep strict schedules, and a late witness may cause delays or adjournments that reflect poorly on the case.

Refreshing Memory from the Notebook

Memory fades, and the law accepts that. A witness may refresh memory from a contemporaneous notebook while testifying. "Contemporaneous" means the notes were made at or near the time of the event, while memory was still reliable.

The usual practice on the stand is:

1. The witness is asked a question about a detail (a time, a description, a sequence).
2. If the witness cannot recall clearly, they may ask to refer to their notebook.
3. The witness reviews the relevant entry silently, then sets the notebook aside and answers from refreshed memory.

The notebook itself may become an exhibit if the defence wants to test it. This is why the notebook's integrity — permanent ink, no torn pages, dated and signed entries, single-line corrections — matters so much. A sloppy or altered notebook can be attacked on cross-examination and can undermine the witness's whole account.

On the Stand: The Rules of Testimony

Once you are sworn in and seated in the witness box, several rules apply:

• Tell the truth. This is the entire job. If the truth helps the case, fine; if it does not, that is still what you say. You are not an advocate for either side.
• Answer only the question asked. Do not volunteer additional information, do not narrate, and do not anticipate the next question. If the question calls for a yes/no answer, answer yes or no and then briefly explain if asked.
• Speak clearly and audibly. The judge, the court reporter, and the jury all need to hear you. Look at the person who asked the question while you answer, so your voice carries.
• Do not guess or speculate. If a question asks for something you did not perceive or do not remember, say so. "I don't know" and "I don't recall" are complete, honest answers. Guessing under oath is how witnesses create perjury risk and lose credibility.
• Say "I don't know" when it is true. A witness who admits the limits of their knowledge is more credible than one who fills gaps with assumption.
• Distinguish fact from inference. If you say "he was drunk," the court wants to know whether you smelled alcohol and saw staggering (observations) or whether you simply concluded drunkenness (inference). Describe what you perceived and let the court draw conclusions.
• Refer to your notes carefully. Refresh memory, then answer from memory — do not read from the notebook unless asked to.

Under Cross-Examination

Cross-examination is where the defence tests your evidence. It can feel personal, but it is not — it is a structured challenge to your observations, your memory, and your certainty. The rules under cross-examination are the same as on direct, with added discipline:

• Remain calm. Do not match an aggressive tone. Composure under pressure reinforces credibility; visible anger undermines it.
• Do not argue with counsel. You are a witness, not a debater. If counsel puts a proposition to you ("Isn't it true that..."), answer the proposition honestly — agree if it is true, disagree if it is not, and correct any misstatement plainly.
• Listen to the entire question before answering. Cross-examiners may embed assumptions in long questions. Hearing the whole question lets you correct a false premise before it is locked in.
• Do not let cross-examination pull you outside your knowledge. If a question asks you to compare your observation to someone else's statement, you can only speak to what you perceived. Stay in your lane.
• Pause before answering. A short pause gives the Crown a chance to object to an improper question and gives you time to think. Silence in the witness box is not awkward; it is careful.

What to Avoid

• Do not discuss your testimony with other witnesses before or during the hearing — this can taint both accounts.
• Do not bring your personal opinion of the accused's guilt or innocence into your evidence; that is for the judge or jury.
• Do not exaggerate. Overstatement is easily exposed and damages everything else you said.
• Do not hide mistakes. If your notebook contains an error, acknowledge it when asked; a candid correction is more credible than a denial.

After You Testify

Once excused by the judge, you may leave the courtroom unless told otherwise. Do not discuss your evidence with witnesses who have not yet testified. If you are needed for further proceedings, the Crown will advise you.