Porter Firepower Navy Petty Officer 1st Class Nathan Paulo fires a .50-caliber machine gun during a live-fire exercise aboard the USS Porter in the Mediterranean Sea, Jan. 12, 2019. SHARE: Download: Full Size (2.46 MB) Tags: Navy Credit: Navy Petty Officer 2nd Class James R. Turner VIRIN: 190112-N-KA046-1424C.JPG Photo Gallery