Pros
Securitas gave me a job when I desperately needed one. My managers have been really easy to work with and being a patrol officer, my nights are never quite the same. There is always something out of the ordinary going on which makes the job a lot more interesting. I might have to write a book someday about the weird stuff I've seen on this job. I've racked up plenty of overtime as well. They are also making a good effort to keep up with current technology.
Cons
Training needs to be expanded. They give you two days to learn a job and you're on your own. Pay is low, especially for patrol officers. We are worth far more than we are paid! Working nights and weekends sucks but that goes with the territory if you work in security. Malfunctioning alarms are a pain in the hind quarters but again, that goes with the job. Benefits are also kinda crappy and a 12 hour shift by yourself can seem to last forever.