It’s not because you fail at something once that you shouldn’t persist… and then turn out to be very good at the something in question. In Sam’s case (she prefers Sam to Samantha) it is the British Army where she will take up her rank of Lieutenant Colonel on 31 August. Currently the chief of staff of the Air Safety branch atJoint Helicopter Command, she was rejected the first time she tried to join the Army 17 years ago…