In the US Army an E-4 is a specialist or a corporal. Most E-4s are specialists. The E-4 is the pay grade, and the specialist or corporal designation is the rank. A corporal is a type of lateral promotion from specialist and as a corporal the soldier is then considered a non-commissioned officer.

One thing I think would've been helpful for the article to address are operational and or program leaders that strive to get things done, respect their team's time, and want to be a good steward of resources. These leaders may ask probing "why" questions trying to do what's arguably common sense.

Cutting through red tape can be seen by others as rule breaking, but often it's just asking the questions others haven't and trying to do something in a new, hopefully better way. That means taking a risk that something could go wrong and that's received in different ways by people.

It’s one of the reasons why organizations that are run by lawyers or accountants almost always suck and often perform poorly. They tend to go back to their roots when uncertain and focus on chickenshit.

The exceptions are usually lawyers who discovered that they despise lawyering.