Blast from the past!

Just heard from an old friend called Adam. We met some 15 years ago at Chatham Ski Centre. A group of blind skiiers were looking for guides so I volunteered (and ended up managing the log book of available guides for when someone wanted to go skiing). We've booked a ski session for a few weeks time. Adam is totally blind so my job as a guide is to shout "left" and "Right" at the appropriate time so he stays on the slope and doesn't bump into anyone.