When he was appointed chief instructor for the tri-services diving school, he adopted BSAC's method of teaching.

BBC: Diver John Smith

The 69-year-old was chief instructor of the joint services diving school before he retired from the service in 2000.

BBC: Diver John Smith

Alan Smith, deputy chief flying instructor at Bicester Flying Centre, said he took to gliding "like a duck to water".

BBC: Boy, 14, 'youngest person' in UK to fly glider solo