Final answer:
When starting your shift as a security guard, it is important to be briefed about immediate issues, read relevant memos, and verify that all equipment is in good condition for a secure transition.
Step-by-step explanation:
When relieving a fellow security guard to start your shift, it is best practice to do all of the above: find out about any immediate issues or concerns, read any memos or notes, and check keys, radio, and equipment. This comprehensive approach ensures a smooth transition and maintains the security and safety of the workplace. It is also important to be aware of specific security protocols, be dressed according to the company dress code, know details like parking for staff with passes, and any paperwork that might need to be completed.