(1) An individual charged with desertion or absence without leave when the governor, by proclamation has declared a state of emergency, or with aiding the enemy, or mutiny, shall be tried and punished at any time without limitation.

    (2) An individual charged with an offense under this code is not liable to be tried by court-martial or punished under section 15 if the offense was committed more than 5 years before the receipt of sworn charges and specifications by an officer exercising summary court-martial jurisdiction over the command, or before the imposition of punishment under section 15.

    (3) Periods in which the accused was outside of this state, in the custody of civil authorities, or in the hands of the enemy must be excluded in computing the period of limitations prescribed in this section.

    (4) Periods in which the accused is absent without authority or is fleeing from justice must be excluded in computing the period of limitation prescribed in this section.