In 1992, Tejas was part of the team that measured the exact height of Mount Everest, and was the team member that planted the prism pole at the top of the mountain so that lasers could be used to measure the exact altitude [REF].
In 1994, Tejas helped guide Norman D. Vaughan up his namesake Antarctic mountain Mount Vaughan (named for his aid of Richard Byrd in Byrd's 1928 Antarctic expedition) in the days leading up to Norman Vaughan's 89th birthday [REF].