I would note that the chain used is not common hardware store chain and also that they no longer use the standard lever type load binders (boomers) and now use ratchet & screw type which is much less likely to pop open and is much safer to tighten and loosen. Young truckers don't even know what a snipe is. While heavy haul truckers still do use chain for securing machinery, most loads are now secured with nylon straps which are much lighter and easier and safer to handle and less likely to damage loads. IMHO light weight ratchet straps are a wonderful developement and have just about eliminated my need for chain.
x2
On my jobsites, nylon slings have just about replaced wire rope slings for most rigging. Some older iron workers still like small wire rope slings for chokers but most jobs use nylon as it is lighter and easier to use and inspect and is often much stronger.
A double wraped nylon choker or barrel hitch is very secure. I especially like the endless loop or grommet slings as they are easy to use and last longer as they do not place most of the wear in the eye as is usual in double eye slings that are used as chokers without a shackle. A double thickness 1-2" flat nylon grommet sling or even better a small kevlar or polyester core round-sling is IMHO much superior and handier than any other kind of wire or fiber rope or chain, unless heat or sharp edges are involved.
We still use wire rope for heavy main rigging but even there nylon and kevlar is becoming much more common because it is lighter and much stronger and easier to use and handle.
Good luck, YMMV