This video demonstrates the value of trusting your gut instincts. The trooper felt like something wasn't right... and he was correct.
We do not critique agencies' safety tactics, we merely tell people that if you think something isn't right, you are probably correct and that is the time to change your tactic(s), get back-up, or be extremely cautious.
Your instincts will almost always be right, as explained by author Malcolm Gladwell in his book "Blink":
http://gladwell.com/blink/