What is the ultimate limitation period?

Explanation:

The ultimate limitation period seeks to balance the concern for the plaintiffs with undiscovered causes of action being foreclosed from proceeding after late discovery of a possible claim against the need to prevent the indefinite postponement of the commencement of proceedings.

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counter-terrorism incorporates the practice, military tactics, techniques, and strategy that government, military, law enforcement, business, and intelligence agencies use to combat or prevent terrorism.

basically prevent, pursue, protect, and prepare, google it if you need more info