"Each time we renew the license, we check up the balloon and we test the pilot, " Sherif said.

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Earlier this month, Arizona Gov. Janet Napolitano signed the toughest employer sanctions in the nation: Beginning Jan. 1, all 130, 000-plus Arizona employers will be required to use a now voluntary Web-based federal service--commonly known as the "basic pilot program"--to check the legal work status of new hires.

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Before he bought his North American NA-50, he persuaded his friend Chuck Yeager, the legendary test pilot, to fly to California and check it out with him.

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If the pilot light goes out the driver has to visually check all the carriage doors.

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His co-pilot will act as a look-out and check that the information from the computer is correct.

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Indeed, future smartphones and even lower-end feature phones will likely become the dominant mobile platforms with which we check the contacts and calendars that were the killer apps of the original Palm Pilot.

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The pilot will see about 20, 000 people in a number of areas across Scotland receive a check-up.

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