Oh, but when it comes to a cop, they better be more than perfect.
Should they be perfect or "more than perfect"? No, but I would hope that they are better at demonstrating an adherence to the very law(s) that they strive to uphold, and better at putting practices and policies for that purpose.
The theory is that these are officers of the law. They represent The Law. Y'know, serve and protect, uphold the law ... that sort of thing. In theory they should be held to, and hold themselves to, a higher standard of practice.
I imagine that there are very defined practices for storing or securing service revolvers while both on and off duty. Which is where they'd see that 74 percent, or 179 guns, were lost "because officers did not properly secure them". And also, why the DHS did not have "specific procedures and policies in place regarding firearms".
In this case, the DHS itself is not holding itself to a higher ideal. I can't imagine what policy would say that keeping your weapon in a lunch box constitutes good practice or "reasonable care".
sigh ... I miss Judge Dredd.