25 C.F.R. § 11.400 – Assault.

(a) A person is guilty of assault if he or she:
1. (1) Attempts to cause or purposely, knowingly or recklessly causes bodily injury to another; or
2. (2) Negligently causes bodily injury to another with a deadly weapon; or
3. (3) Attempts by physical menace to put another in fear of imminent serious bodily injury.
(b) Assault is a misdemeanor unless committed in a fight or scuffle entered into by mutual consent, in which case it is a petty misdemeanor.