For seven years, beginning in 1981, Wertheim was the senior vice president of science and engineering of Lockheed Corporation. In 1983, along with several other dozen retired flag officers, Wertheim took out a full-page advertisement in the Washington Times condemning retired Rear Admiral Gene La Rocque for appearing on Soviet Union television and himself condemning the defense policy of the United States. In 1987, the New Mexico Military Institute inducted Wertheim into their hall of fame. Beginning in 1988, Wertheim became a private consultant with Science Applications International Corporation. He also did consulting work with the Lawrence Livermore National Laboratory, Los Alamos National Laboratory, United States Department of Defense, and the Draper Laboratory. In 2000, on behalf of the University of California, Wertheim was the lead of a review of Los Alamos National Laboratory after hard drives temporarily went missing. Wertheim was a member of Sigma Xi and Tau Beta Pi.
