... the "old" proverb "do not meddle in the affairs of wizards, for they are subtle, and quick to anger".
Some few also know the vairant thereof "do not meddle in the affairs of dragons, for you are crunchy, and taste good ketchup".
Apparently, someone at DHS forgot the engineers corollary to this proverb:
"Do not irritate an engineer, for smiting you will amuse them, and make a good story over beer"