This sounds like the plot to the story Johnny Cash tells in One Piece at a Time, minus the machine gun, of course.
You mean lasers like this? https://www.nbcnews.com/news/military/us-military-used-laser...
I use Free File Fillable Forms to prepare my taxes. It can be a bit tricky to make sure all the correct forms are completed and the calculations are correct, so that is the exact approach I take. It's a pain in the butt to essentially do my taxes twice, but I'm willing to go through that if it means I'm not giving money to the tax prep industry.
https://www.irs.gov/e-file-providers/free-file-fillable-form...