The original owner of our bus traveled between Vegas and Vancouver and wanted to have as much security as possible. He had Marathon install both an alarm and strobe lights that flash, including the docking lights when the alarm is breached. I have accidently set off this device and it is really annoying.He also had the "Viper System" that talks to you when you get too close, this is really annoying and will go off if its rains, "Rain Stand Back, Rain Stand Back" The only thing he did not have were 50 caliber machine guns behind the lights.
Its our plan to avoid places where we feel uncomfortable, even when we stay in Walmarts we spend some time sizing up the location before we settle in. And if we are completely uncertain we do a search on the web for crime reports.
http://fisher.lib.virginia.edu/collections/stats/crime/
There are lots of sites, and some are more current than others, but it does provide a snapshot.
Side Story: While renting an RV in Europe and staying outside Copenhagen we had our motorhome vandalized, got everything, you name it, laptops, cameras, cash, the whole deal. I filed a police report and made a claim with my insurance company (USAA). had never made a claim for 35 years. This was a big one, over $15K. They took 3 months before they paid the claim and then excluded all computer equipment from my home owners policy, really nice people. PS> Electronic cameras are considered computers. Can't win with insurance no matter how good you have been.