The dean of students at monterey’s naval postgraduate school died on Sunday after being involved in a jet ski accident. 51-year-old captain alan “dex” poindexter was vacationing in florida when the accident occurred. poindexter was struck by another jet ski and fell into the water. He was reportedly conscious after the accident, but was pronounced dead a short time later at an area hospital. An autopsy is expected to be conducted to determine the cause of death. Captain alan “dex” poindexter graduated from the naval postgraduate school in 1995, and went on to be selected to NASA’s astronaut corp. he served as captain of the space shuttle discovery’s 2nd-to-last-mission in 2010.