In 1958 the Army added two grades to the NCO ranks. With the addition of these grades, the ranks of the NCO were corporal, sergeant, staff sergeant, sergeant first class, master sergeant and sergeant major.
DRI is the general term for a set of reference values used to plan and assess nutrient intakes of healthy people. These values, which vary by age and gender, include: Recommended Dietary Allowance (RDA): average daily level of intake sufficient to meet the nutrient requirements of nearly all (97%-98%) healthy people.
(Based on a 2000 Calorie Intake; for Adults and Children 4 or More Years of Age) REV. 01/11/2011. Nutrients in this table are listed in the order in which they are required to appear on a label in accordance with 101.9(c). This list includes only those nutrients for which a Daily Reference Value (DRV) has been established in 101.9(c)(9) or a Reference Daily Intake (RDI) in in 101.9(c)(8)(iv). How to Understand and Use the Nutrition Facts Label.