Christopher Willoughby, Successively Unit Chief, Division Chief, and Department Director for Operations Evaluation (1970–1976); Mervyn L. Weiner, First Director-General, Operations Evaluation (1975–1984); Yves Rovani, Director-General, Operations Evaluation (1986–1992); Robert Picciotto, Director-General, Operations Evaluation (1992–2002); Gregory K. Ingram, Director-General ...