The 2017 Phillip J. DiNenno Prize was awarded to the innovators of the VESDA smoke detection system. The initialtechnology was invented and patented byDavid PackhamandLen Gibson, who worked withJohn Petersenonprototype development, field trials, and applications engineering.Dr. Martin Colewas responsible for the successfulcommercial development and many further patented technical developments. The VESDA technology and its pre-eminent role in the introduction of aspirated smoke detection (ASD) internationally has led to a major global impacton public safety.The recipients of the 2017 Philip J. DiNenno Prize areDavid Packham,John Petersen,andDr. Martin Cole.Amplecommendation is given to their deceased co-inventor and passionate advocateLen Gibson.Otherimportantcontributions are noted, including technical and other staff from IEI, CSIRO, SSL and Telecom Australia.