Communication skills are also a big part of your job. You will need to learn how to communicate orders and how to follow procedures
As a security guard, you will come in contact with a lot of different people, like contractors or customers, on a daily basis, and that is why you should know how to communicate commands or instructions for a variety of situations. Each company you work for will have their own policies and procedures, and sometimes you will need to follow and explain those policies to other people who are unaware of them. Many of these situations are often unpredictable.
Communication skills are also important when working with co-workers. Many times you might be needed to work with a partner, and your communication skills will help your partner know your whereabouts in order to find you if needed, and it will also help them do their job easier.
Communication skills can be verbal, but can also be written. As a security guard, you will need to fill out reports for the company you work for, and for the next shift replacing yours. If you lack in those skills, it will be almost impossible for you to do this job.