Use Dafont.com to download a free font that will fit the style you are looking for. Use the distorted, eroded, stencil, and techno categories.
I use this site all the time. The selection is great and you can preview the font as you browse by giving it a string to preview with (aka the text you'd want to format.)
Be aware some fonts may have restrictive licenses.
Here are links below to help you search:
"Font shopping" is one of my favorite things to do on Dafont.com! :)