(a)
Any person subject to this chapter who—
(1)
operates or physically controls any vehicle, aircraft, or vessel in a reckless or wanton manner or while impaired by a substance described in section
912a
(b) of this title (article 112a(b)), or
(2)
operates or is in actual physical control of any vehicle, aircraft, or vessel while drunk or when the alcohol concentration in the person’s blood or breath is equal to or exceeds the applicable limit under subsection (b),
shall be punished as a court-martial may direct.