I have just been privileged to attend several presentations by Dr Jeffrey Hoffman who is a veteran of five space missions. He was one of the astronauts who conducted repairs to the Hubble Space Telescope. One of his fellow astronauts was a female who plainly blended in with the crew and got on with the job. She also took part in repairing Hubble which meant being outside the space shuttle and space walking - floating really. The point I am making is that Dr Hoffman was a truly impressive man and so humble. Little or no use of 'I' and utter respect for his colleagues. The audience gave Dr Hoffman a standing ovation and it was obvious he was very moved by it. It is so easy to spot a true professional - male or female.