Many years ago, we were on S&R stbi at a BoB display at Gaydon (?) Parked next to us were the Army Sioux display team. Came their start time and one was having problems. The Team Leader already had his machine fully rotors running and got out, leaving it unattended, while he went to help his team member !
I have mentioned this previously and I seem to recall that this was considered to be 'standard practice' in AAC ops.
