3D Printing Rocket Launchers

There is 3D printing versions of not something that could shoot a plane out of the sky, but from what I've seen some very serious 3D printed rocket launchers. They can get a payload into the air, same with the cans of fouls or these other 3D printed bazooka things. The problem is getting it to hit the plane, I think, that requires that you've got to see its trajectory, follow it, intercept it,. That requires some smarts of programming. And there are theoretical ways to do that, according to people I've spoken to, but I haven't seen anyone do it yet. Yeah, I think that'd be a hard process to go