According to Ahasteen, he strongly fosters a relationship where his staff can engage in open dialogue, attributed to his training as a non-commissioned officer in the U.S. Marine Corps.

Source: https://navajotimes.com/reznews/education-is-the-ladder-but-is-it-enough-nnwo-staffer-leaves-nygren-team/?utm_source=rss&utm_medium=rss&utm_campaign=education-is-the-ladder-but-is-it-enough-nnwo-staffer-leaves-nygren-team

All officers and staff non-commissioned officers who get stationed at Marine Barracks Washington go through Ceremonial Drill School.

Source: https://www.aerotechnews.com/blog/2023/03/22/womens-hisotry-month-the-1st-female-marine-silent-drill-platoon-commander/

However, senior non-commissioned officers in the army and senior petty officers, their equivalent in the Naval Service, can work until they are 56.

Source: https://www.irishexaminer.com/news/arid-41086489.html