"Omega technology" is a catch-all term that indicates technological remnants from the time before The Big Mistake. Due to the fluctuating and merging worldlines, some of it is alien technology that was re-purposed by the Ancients, while the rest has more enigmatic origins. Regardless, it's everywhere, and anyone who manages to survive out in the wastelands inevitably stumbles upon an old fusion rifle, hoverboard, or suit of powered armor. Unfortunately, due to time and wear most of it is highly unstable and prone to breaking down. In some cases it can be salvaged, functioning and reduced capacity, but just because a hoverboard doesn't work doesn't mean it can't make a neat-looking shield.