In a photo made Wednesday April 25, 2012, a San Francisco Bar Pilot boat makes its way back to its home pier in San Francisco. Since the days of Mark Twain, the pilots have had it good. Thanks to political clout and highly specialized training, this cadre of 60 ship captains has for more than a century had control over guiding oil tankers and cargo ships in, out and around the San Francisco Bay. (AP Photo/Eric Risberg)
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