Over the second weekend of May, Dartmoor's anual Ten Tor's challenge was held. Nearly 2,500 youngsters took part in the hike of up to 55 miles. Throughout the course there are checkpoints which record people passing through and also provide food, water and medical supplies. To keep this supply topped up two seakings from the Royal Navy attended the event constantly running people and supplies to their points. Below are a selection of images I captured of the helicopters at the event.