At this point, you should know whether you prefer the chronological or functional resume format, but if you're still undecided, go back to the guard resume samples you've identified to determine which format suits your work experience best.
If you've decided on the chronological style, it's most likely that you're following a traditional career path and you don't have any employment gaps. The work experience section will be comprised of sub-headings for each job (most recent first), with 3-5 bullet points highlighting your accomplishments.
The same sentence fragment construction you used in the summary should be used for the bullet points, and the accomplishments you list should tell a short story in the form of a problem, your solution, and the result. Each job and accomplishments should look something like this:
ABC Oil Company - Toledo, OH
February 2009 - February 2015
- Interviewed, screened, and trained security staff, resulting in lower turnover rates
- Created on-going training programs which ensured all staff were up-to-date on protocols
- Monitored CCTV's to ensure guards were functioning properly and to provide assistance if needed
In the functional style, your achievements will reside solely in the accomplishments section, which will be inserted between the resume summary and work experience sections. Because this section will cover your entire work history, you should try for 6-10 bullet points. The advantage is that you can match the employer's requirements to your accomplishments without having to attribute them to a job that may not be directly related to a guard position.
Since all of your successes are listed in the new accomplishments section, the resulting work experience section will be a simple list of previous jobs. It's not even necessary to include dates of employment, which is helpful if you have employment gaps.