Eagle Solid Metal Core Scooter Wheels What Is The Order Of The Ranks You Get After Completing Metal Gear Solid 4? I Got Eagle.?

What is the order of the ranks you get after completing Metal Gear Solid 4? I got eagle.? - eagle solid metal core scooter wheels

I have a rank of Eagle, and has played at the level 3 difficulty, I think it is Solid Snake Normal. Anyway, it's good or bad, can someone show me that?