This is the third time for worldwide DNS/LES experts to get together to introduce research progress, exchange ideas, and discuss future research directions since the US Air Force Office of Scientific Research (AFOSR) sponsored the First AFOSR. International Conference on DNSILES (FAICDL) at Louisiana Tech University in 1997. The second conference was held at Rutgers - The State University of New Jersey in 1999. I am very pleased that many scientists and engineers are interested in this conference. I have received over 90 regular papers, in addition to 19 invited papers. It clearly shows that the DNS/LES community is much larger than ever before. Significant progress has been achieved during the past decade. It is difficult to give a complete review in this area. People may take a reference from reviews by Moin & Mehesh (1998) for DNS and Leseiur & Metais (1996) and Piomelli (1999) for LES. Sagaut (2000) just published a LES book, which gives discussions on many issues related to LES. It is also very difficult to invite all of the important contributors to give invited lectures for the conference. During this conference, Germano will give a review on LES; Visbal and Gatski will talk about Air Force and NASA needs on DNSILES and their applications; Sagaut, Kato, and Shan will talk about complicated configurations and industrial application; Jolsin will talk about DNS for flow control; Adams and Thong about high speed flow transitions; Givi about LES for reacting flow, Shu and Jiang about high order discretization, Karniadakis about DNS for unstructured grids; Vasilyev about some important LES constrains. In addition, Knight, Piomelli, Satofuka, Verstappen will also give lectures about their own distinguished work.