What does S/NF stand for?

S/NF stands for "Secret/NOFORN"

How to abbreviate "Secret/NOFORN"?

"Secret/NOFORN" can be abbreviated as S/NF

What is the meaning of S/NF abbreviation?

The meaning of S/NF abbreviation is "Secret/NOFORN"

What does S/NF mean?

S/NF as abbreviation means "Secret/NOFORN"