Staff at Asda in Boldon on South Tyneside saved a man's life when his heart and breathing stopped.
Tom Tweddle, 65, was in the store's car park when security team leader Helen Richardson was alerted that he was unwell.
At first staff thought he could be suffering a stroke so they helped him from the car and into the first aid room.
But when his heart and breathing stopped, Helen started working on him, including giving CPR, until ambulance crews arrived.
Helen learnt life-saving as a child and has kept up her training out of work and for her job as security section leader at the store.
The incident happened in July and Tom is now recovering after surgery for what turned out to be a benign brain tumour.
He has also been back to the store to thank Helen and her colleagues.