Official websites use .gov
Secure .gov websites use HTTPS
Aug. 21, 2018
August 2018 Puzzle Periodical - Crop Calculations
NSA Puzzle Periodical for August 2018: Crop Calculations
Jan. 16, 2018
January 2018 Puzzle Periodical - Snow Manipulation
January 2018 Puzzle Periodical; Puzzle created by James M., NSA Operations Researcher