Reference 'Who had the key?'
As a co on my first crew I had the door key as my Captain was vertically challenged and could not easily reach the keyhole.
Captain had to clear us all to enter the area with the armed Policeman, then I ran ahead to get the door open. Captain first up the ladder, co second.
Any Morris Minor key would have done the job.
Nav Rad had the weapon key around his neck.
Ray