Don't Tread On Me was a staple for angry workouts for me on deployment...nothing like a little Metallica to get the blood flowing. Broke a finger punching a punching bag while listening to it once though...not so smart.
American Badass by Kid Rock functions quite nicely too for righteously indignant pro-American listening!
Thank you for telling me that....I pray that soldiers formerly & currently serving may hear one of the songs played on the Canteen & find comfort or relief!