On one of my several sojourns at the ASW base in San Diego (that would be FLEASWTRACENPAC), I was in a course that inspired me to do a lot of independent breadboarding in my room. One night I connected Vcc straight across a low-resistance precision (10 turn) potentiometer, toasting it. The devices are quite small.
The next day I was recounting my folly to another student in the hall of one of the lab buildings. Just as a CPO I didn't know was walking by, I was heard saying "Yeah, I smoked a little pot' last night."
His head snapped around and stared in my direction almost involuntarily (as if wishing to pause independently of his feet, which kept walking).
That was about a year after the zero-tolerance success in cleaning up the Navy, back in the early 80s.