Comment: All Along the Watchtower

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All Along the Watchtower

"One if by land, and two if by sea"

https://en.wikipedia.org/wiki/Old_North_Church#History

http://www.dailypaul.com/270001#comment-3051956

"I, __________, do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic."

https://en.wikipedia.org/wiki/Oath_of_enlistment

There is no duration defined in the Oath