A native English speaker, I am recently retired after a long career in aviation. I have a bachelors degree in science and mathematics, and an extensive background in teaching both subjects at high-school level. My experience encompasses extensive writing of technical aviation material, as well as proof-reading same for colleagues. I have well-above average English language skills, both written and oral, and was recently able to help my (South American) partner extensively by proof reading her work towards her PHd in oil-field pipe corrosion chemistry. I am told by friends that I'm a very good letter-writer, often funny.