In 1966 - 68 Yates was Chief Engineer of the Corps ' Philadelphia District .
Was also briefly Chief Engineer of the North Pacific Division , headquartered in Portland , Oregon , and responsible for the Columbia River Basin .
In 1966 - 68 Yates was Chief Engineer of the Corps ' Philadelphia District , and was also briefly Chief Engineer of the North Pacific Division , headquartered in Portland , Oregon , and responsible for the Columbia River Basin .