Welcome back to the our channel for a feature about how thousands of gallons of jet fuel reach its end users located far away from the bases. We have been doing this for at least 40 years. In fact most countries do very similar operations. In fact I actually setup a FARP with AVGAS for Caribou aircraft. And yeas bladders are heavy! I have wondered why we do not use certain engineered textiles/rubbers/plastics/bladders. There have been numerous tested in space, even as pressure chambers. You could store LNG in these kinds of tanks underwater, if it was at sufficient depth. Also, there has been some work on using quickly deployable gas pipes that are for all intents and purposes are bladder based. I made those towable drums during the Gulf war at Amfuel. QC was pressure testing one with compressed air and forgot. Talk about a bang though the factory. Amfuel was a good place to work but Zodiac Aerospace is a horrible company and they owned us at the time. I was proud to make those for our forces. We also made fuel bladders C130, F18, A10, T38, F5, KC135 and a ton of Bell helios. Any questions about how they are made? It is a cool process, some use plaster forms, other use bolt together forms.