Not just the Navy and Marines, but the Army also has a training program. From the Denver Post: "The Army, which also has a training program, lost 36 soldiers in sport-bike accidents in the same time period (as the Navy and Marine study). The accidents follow a pattern: excessive speed, poor cornering and insufficient braking." Full article:
http://www.denverpost.com/search/ci_10816770.
Cornering and braking can be taught. As for the excessive speed thing, I'm still trying to learn that myself.