Crossword puzzle clue "code cracking group that collects data from billions of phone calls abbr"

Here are the possible solutions for code cracking group that collects data from billions of phone calls abbr clue

Answer
Clue
Relevancy
nsa
Clue
Code-cracking group that collects data from billions of phone calls: Abbr.
Government group that collects phone-call data: Abbr.
Government group that collects phone and email data: Abbr.
eons
Clue
Billions and billions of years
Definition
EON, a long period of time, also AEON
many
Clue
Billions and billions
Definition
a great number
sagan
Clue
Carl who said "billions and billions . . ."
"Billions and Billions" author Carl
"Billions and billions" astronomer

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