I have a long history with marching band. I marched in different groups from the time I was 12 years old until I was 25. Once I got into computers and software development I really wanted to write a drill design program. After about a year of after-work development I released PowerDrill 3D. I'm proud of it although I only ever sold a few copies. At this point I'm considering open sourcing it and seeing if anyone wants to take up the banner.