sentences:  From 1959 through 1970, he was also a consultant for commercial enterprises such as General Dynamics Corporation and the Rand Corporation.From 1965 to 1967, Eckart was vice-chancellor for academic affairs at UCSD.He then served the University of California, from 1967 to 1968, as alternate representative to the Institute for Defense Analyses, which was made up of 12 member universities and functioned as an independent source for studies and advice for the Department of Defense.