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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for U.S.-Can. defense org. 5 letters:

NORAD: Can.-U.S. defense org.
NORAD: U.S.-Can. defense org.
CENTCOM: *Military org. that's part of the U.S. Department of Defense