What does NNM stand for?
NNM stands for "Not Normally Manned"
How to abbreviate "Not Normally Manned"?
"Not Normally Manned" can be abbreviated as NNM
What is the meaning of NNM abbreviation?
The meaning of NNM abbreviation is "Not Normally Manned"
What does NNM mean?
NNM as abbreviation means "Not Normally Manned"
