It should be filled with helium so it wouldn't do the Hindenburg.
The Hindenburg did *NOT* go down from the hydrogen. This has been pretty much proven. The reason it burned up is because the doping material (the stuff used to reflect light and heat, and all that) was made from aluminum shavings, and a static electricity buildup. In other words, the entire bladder was covered in a rudimentary form of rocket fuel. When the static electricity discharged, it lit the doping compound on fire, which burned extremely quickly. If you watch the videos of it burning, you'll see that the blimp itself was still in the air, even though more than half of the structure was completely engulfed in flames. If the hydrogen is what was burning, there's no way the thing could have stayed in the air as long as it did.
Yes, I saw this on TV. It was a really cool program. Anyway, I just thought I'd clear that up. In truth, the Germans (who built the Hindenburg) had figured out how to handle hydrogen quite safely. Someone built a model of their safety measures, and tried to get the hydrogen to light, and all of the failsafes worked exactly as planned. Meaning, they were unable to get the hydrogen to burn inside (or even outside) the bladder. So, all things considered, hydrogen might actually be a very useful form of fuel, if handled properly.
I hope you learned something from this brief write-up. Mouser X over and out.