Under the leadership of Commander Thomas. M. "Tommy" Dykers, the USS Jack completed 9 war patrols, out of which only 2 were unsuccessful. It received 7 battle stars, as well as a Presidential Unit Citation. The submarine came to life in 1942, as most Gato-class vessels, and because asbestos was heavily employed in shipbuilding at the time, the carcinogen is very likely to have been present on the USS Jack. For this reason, we strongly encourage veterans who served on this submarine to undergo annual medical examinations to make sure the toxic fibers they inhaled have not caused any damage to their lungs. The submarine was eventually transferred to Greece in 1958 and was sunk as a target by the US 6th Fleet in 1967.