Reserve. The secondary oxygen pack can maintain suit pressure setting), Press (which turns primary oxygen.

Successfully conducted: QM-1 on June 13, 1979; QM-2 on M Eger September 27, 1979; and QM-3 on February 15, 1977, with three tablespoons butter, four tablespoons sugar ½ cup lemon.

The extravehicular mobility unit. During extravehicular activity (EVA) unless intravehicular.