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151015-N-XL102-049 ANNAPOLIS, Md. (Oct. 15, 2015) Lt. Daniel Stayton gives classroom instruction on celestial navigation (CELNAV). The Naval Academy reinstated CELNAV classroom instruction during the summer session of 2015. The Class of 2017 will be the first in many years to graduate with a basic knowledge of CELNAV. (U.S. Navy photo by Mass Communication Specialist 2nd Class Tyler Caswell/Released)
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