As gun cruisers, "Tiger" served for eight years, "Lion" for five years, and "Blake" for two years. By 1961 it w the new USN guided AA missiles, nb Terrier had failed dismally in test before JFK on Memorial Day 1961, London and that the new Sea Slug armament of the County-class was possibly even less impressive on test in Australia at Woomera. But it was too late, the RN cruiser fleet had been reduced to HMS "Belfast" and "Bermuda" and the three flawed Tigers. The new Mk 26 Twin 6-inch gun proved the overweight anachronism which its critics claimed. The Tigers' main armament almost always jammed within 30 seconds of opening fire, and the Tigers were very different from the rest of the RN fleet, causing logistics and supply issues and increasing costs, the RN mainly being deployed in SE Asia and Middle East waters in the 1960s. These issues and the "unfashionable" heavy guns condemned the class, In contrast, HMS "Belfast", in reserve in 1965, had fired its 6-inch guns for days while supporting the Battle of Inchon during the Korean War in 1950.