US NAVY USS JOHN C. STENNIS CVN-74 Challenge Coin. This is a great looking US NAVY - USS John C. Stennis CVN-74 commemorative challenge coin. Coin has reeded edges and is about 1 9/16" in diameter. All details are raised lettering. Coin is contained in an acrylic air tight holder. USS John C. Stennis (CVN 74) is the seventh Nimitz-class nuclear-powered supercarrier in the United States Navy named for Senator John C, Stennis of Mississippi. She was commissioned on 9 December 1995. Her home port is Bremerton, Washington. The mission of John C. Stennis and her air wing (CVW-9) is to conduct sustained combat air operations while forward-deployed. The embarked air wing consists of eight to nine squadrons. Attached aircraft are navy and marine F/A 18 Hornet, EA-6B Prowler, MH-60R, MH-60S, and E-2C Hawkeye. The air wing can engage enemy aircraft, submarines, and land targets, or lay mines hundreds of miles from the ship. John C. Stennis's aircraft are used to conduct strikes, support land battles, protect the battle group or other friendly shipping, and implement a sea or air blockade. The air wing provides a visible presence to demonstrate American power and resolve in a crisis. The ship normally operates as the centerpiece of a carrier battle group commanded by a flag officer embarked upon John C. Stennis and consisting of four to six other ships. John C. Stennis's two nuclear reactors give her virtually unlimited range and endurance and a top speed in excess of 30 knots (56 km/h, 34.5 mph). The ship's four catapults and four arresting gear engines enable her to launch and recover aircraft rapidly and simultaneously. The ship carries approximately 3 million US gallons of fuel for her aircraft and escorts, and enough weapons and stores for extended operations without replenishment. John C. Stennis also has extensive repair capabilities, including a fully equipped Aircraft Intermediate Maintenance Department, a micro-miniature electronics repair shop, and numerous ship repair shops. For defense, in addition to her air wing and accompanying vessels, John C. Stennis has NATO RIM_ Sea Sparrow and Rolling Airframe Missile (RAM) surface-to-air missiles, the Phalanx Close-in Weapons System for cruise missile defense, and the AN/SLQ-32 Electronic Warfare System.