The VERITAS collaboration, especially its members that were part of the Whipple 10-meter telescope group, are saddened at the loss of Michael Hillas.

Michael was the man whose physical insight, coupled with a flair for extracting the most from simple numerical calculations, was able to develop the key analysis procedure that enabled the first detection of an astrophysical gamma-ray source using a ground-based instrument. Indeed, this method continues to be the bedrock on which all modern analyses are built. In many respects Very-High-Energy gamma-ray astronomy owes its existence and continued good health to the pioneering efforts of this man.

We extend our sympathies to his family and friends.