Petty Officer 1st Class Jason Cook, machinist's mate, and Petty Officer 2nd Class Mark Cygnarowicz, machinist's mate, assigned to the fast-attack submarine USS Alexandria (SSN 757) explain the sub's weapons systems to country music star Aaron Tippin. Tippin toured the submarine before performing a free concert at Naval Submarine Base New London as part of the Spirit of America Tour.
Seaman John Narewski
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