ALTUS AIR FORCE BASE, Okla. – Air Force Senior Airman Akeem Balfour, 97th Civil Engineer Squadron heavy equipment operator, uses a power vibrator in wet concrete Oct. 10, 2013. Balfour used the power vibrator in the concrete to fill voids by moving r

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ALTUS AIR FORCE BASE, Okla. – Air Force Senior Airman Akeem Balfour, 97th Civil Engineer Squadron heavy equipment operator, uses a power vibrator in wet concrete Oct. 10, 2013. Balfour used the power vibrator in the concrete to fill voids by moving rocks underneath the mixture. The 97th laid 50 yards of new concrete over Access Road saving the base thousands of dollars in contracting costs

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