What does UMBRA stand for?
UMBRA stands for "US Codeword for high grade SIGINT"
How to abbreviate "US Codeword for high grade SIGINT"?
"US Codeword for high grade SIGINT" can be abbreviated as UMBRA
What is the meaning of UMBRA abbreviation?
The meaning of UMBRA abbreviation is "US Codeword for high grade SIGINT"
What does UMBRA mean?
UMBRA as abbreviation means "US Codeword for high grade SIGINT"
