Rest Areas Safe?

Don't put too much faith in the "24 hour Security". I live 4 miles from a major rest area on I95 that has security provided by the Florida Highway Patrol. Not long ago a young couple was discovered dead by a passing motorist in their car parked a couple of slots down from the trooper. They has been dead a couple of days, turned out to be from carbon monoxide poisoning, but "Smokie" never noticed, ever though the car was there for those days. Now, I'm sure that if there was a gun battle going on, he would have noticed, or someone running by screaming for help, but like others, I trust in my own protective measures.