In August 2007 , he served as the commander of the NEEMO 13 mission , living underwater for another ten days .
In July 2004 , Patrick served as an aquanaut during the NEEMO 6 mission aboard the Aquarius underwater laboratory , living and working underwater for ten days .
In August 2007 , Patrick served as the commander of the NEEMO 13 mission , living underwater for another ten days .
In July 2004 , Patrick served as an aquanaut during the NEEMO 6 mission aboard the Aquarius underwater laboratory , living and working underwater for ten days .