For the MGS V portion of the Metal Gear Marathon, the team has offered to use requested songs on donations of $10.  Here are some suggestions for you:

Linkin Park - "Crawling", "Numb", etc.
Mike Post - "A-Team Theme"
Sylvester Levay - "Airwolf Theme"
Sabaton - "Metal Machine", "Into the Fire"
Marty Robbins - "Big Iron"
Unlnown - "Blood Upon the Risers"
Mark Isham - "Army Strong"
Mark Oldfield - "Nuclear"