It must have been around sixteen years ago now that they actually did trials with the Hercules. I saw a demonstration at Mangalore but for some reason (cost?) the idea never went ahead. There was also a proposal to convert the ex-RAN Trackers to water bombers as well. As far as I know, they are languishing down at West Sale areodrome. Over in the USA eighteen ex-Navy Trackers were converted to aerial tankers. I also see John Anderson has canned the idea of the purchase of Skycrane helitankers. Silly decision but that's the mentality you would expect.