During the Vietnam war I was a FTG2, (think weapons control) 1964-68. While on board the USS Chicago CG11, I advanced from E2 to E5 in the gun division 5"/38. In 1978 I was called back (voluntary reserve) to be an armorer hence the GMG2 rating. At that time the G stood for guns. M stood for missile. BTW I made the first two Vietnam cruises on the Chicago and we were in the task force when the USS pueblo was taken by the North Koreans. My avatar honors the Skyraider AD1 aircraft and pilots.Is your screen name reflective of having been a 2nd class gunnersmate. If so, what's the other G for? Guided missile, perhaps? Regardless, from one vet to another, Thanks for serving. Even if it was on a surface craft.