the inception of the JASON Defense Advisory Group, he was a U.S. government advisor in the fields of plasma physics, physics education and strategic planning. (Although Treiman parted ways with Jason in the late 1960s, he rejoined them in 1979.) In 1970, when Fermilab was set up, its founder Robert R. Wilson asked Treiman if he would direct the theory group. Treiman, who did not want to leave Princeton, was able to help get the group started by taking several extended leaves of absence. Treiman and his wife Joan were active members of CUSPEA - a program set up by T.D. Lee to help mainland Chinese students get access to graduate education in the U.S. In 1981, 1982 and 1988, they traveled to China to interview prospective students for the program. A feature of Treiman's work was his ability to devise simple, unambiguous experimental tests for theoretical predictions and phenomena. In addition to his own work, Treiman was widely recognized as a teacher and mentor, supervising more than two dozen graduate students over three decades. His Socratic teaching style enabled his students to gain valuable insights without having been spoon fed the results. He was known for his general wisdom as well as his expertise. One of his more paradoxical sayings is known as Treiman's theorem: "Impossible things usually don't happen." He was elected a Fellow of the American Physical Society in 1963, and a member of the U. S. National Academy of Sciences in 1972. Treiman was awarded the Oersted medal by the American Association of Physics Teachers in 1995. He was also a member of the American Academy of Arts and Sciences and the American Philosophical Society. Treiman died of leukemia on November 30, 1999. Major scientific achievements 1957 (with J. David Jackson and Henry Wyld) - definitive theory of allowed beta decays, taking into account time and parity violations 1958 (with Marvin Goldberger) dispersion relations analysis of pion and nucleon beta decay, culminating in the Goldberger-Treiman relationship for the charged pion decay amplitude. This work eventually led to the hypothesis of the partially conserved axial vector current, known as PCAC and to a deeper understanding of spontaneously broken chiral symmetry of the strong interaction. 1962 (with C.N. Yang) Treiman-Yang angle test for single pion exchange dominance 1966 (with Curtis Callan) derivation of the Callan–Treiman relations for K meson decay. 1971 (with David Gross) scaling in vector gluon