So we will begin your risk assessment:
1. Most soldiers, i.e., enlisted, have no more than a HS diploma, thereby in the real world, they have limited understanding to care for classified documents;
2. Soldiers do not have a need to know the contents of classified documents;
3. Soldiers do not make tactical or strategical decisions requiring classified documents;
4. NCOs may at times have limited assess to classified documents when executing certain activities such as LRPS (Long Range Patrols), SOCs (Special Operations) behind enemy lines, i.e., Laos, North Vietnam, Cambodia, China. Usually these action were led by Marine 2ndLts thereby ensuring the continued necessity of TBS to fill the vacuum.
BTW, a S&C officer could not be relived by other orders without an accounting of every tome, document and pamphlet, A lost document resulted in a loss of numbers in the promotion list as well as a bad fitness report, the horror.