sentences:  In 1960, Howe became the first chief executive officer (CEO) of the Housing and Development Board (HDB).From 1970 to 1979, he was the chairman and President of the Development Bank of Singapore (DBS), the first Chairman of the Port of Singapore Authority (PSA), the Permanent Secretary in the Prime Minister's Office, and the head of the Singapore Civil Service.During his tenure as a senior civil servant, Howe played the leading role in several of Singapore's iconic infrastructural projects like the Mass Rapid Transit (MRT), Singapore Changi Airport and public housing.