Good health insurance. They offer 2 different plans, and will allow you to add your family (you do have to pay for the extra). They also offer dental, (really good plan, less than $30 a month and covers almost everything) 401K with a match, and Aflac. Other benefits include a catered Christmas Party (with raffles and gifts just for showing up), a gym reimbursement and paid Volunteer time. After 3 years, they also give you another week of vacation time.
Health insurance, gym reimbursement, 401k
There really isn't much. They have healthcare and dental but at the cost it's a bit of a pain. The best is that they do a Christmas party which can be rare for a security company.
Small family company so benefits are not top of the line but they are available and from what I see a pretty good dental plan too.
List based on reports from current and former employees. It may not be complete.