See more synonyms on Thesaurus.com. verb (used without object), persevered, persevering. 1. to persist in anything undertaken; maintain a purpose in spite of difficulty, obstacles, or discouragement; continue steadfastly.
The song 'Secret Agent Man' composed for Secret Agent (1964), can be also heard in Ace Ventura: When Nature Calls (1995), Spy Hard (1996), Austin Powers: International Man of Mystery (1997), Bowfinger (1999) and Company Man (2000) (instrumental version).
Among the most revealing documents is a study of the Gulf of Tonkin incidents by NSA historian Robert J. Hanyok. Titled Skunks, Bogies, Silent Hounds, and the Flying Fish: The Gulf of Tonkin Mystery, 2-4 August 1964, it had been published in the classified Cryptological Quarterly in early 2001.