McCarthy's wife died in 1977 in a climbing accident http://www.mcjones.org/System_R/SQL_Reunion_95/sqlr95-Vera.h...
Very interesting. Off-topic thought, but... "So she joined the group to climb Annapurna, and was part of the second team to attempt the summit. You go up in pairs, so you do pairwise summit attempts - these Himalayan style things where you do base camps. So she was working her way to the upper camp as the first summit team was coming down between the topmost and the second topmost. They passed, and then she was lost…
Moreover, climbing as a trio tends to be (much) slower than traveling as a pair. When weather and hypoxia are your biggest threat, speed can literally be the only thing keeping you alive.