The 183 was cancelled, no? And yes, there are always lots of goofy sci-fi projects on the go. My favourite to date is MARAUDER, because it was cool and especially because of the acronym. It’s extremely unlikely that any of those will be produced at scale, though, let alone deployed anywhere. TBH I’m far more concerned about cyberwarfare and the negligent approach to cybersecurity in infrastructure than I am about high-tech weapons.