..yes who chuckled at his handiwork several hours previously.
When you have someone who can't tell the difference between a " chuckle " and a cough to stifle a cry then he's got no right to have been in the police force.
Men don't cry/whinge like a woman freely does they cough to hold back from yelling.
Of course the guilters would say he laughed because it fits the scenario of him being a " psychopath " who, without hesitation had slaughtered them all. They were looking for anything to nail him.