For those who have not met her she is American and has a bit of a background in aviation and safety:
Gretchen has a strong aviation background, having served in the US Air Force, flown jet and piston aircraft, and led a multi-national team of test pilots and aircraft designers through the development and execution of a new approach to operational performance and safety certification.
Gretchen is an internationally recognised expert in human factors, and respected throughout the industry for her knowledge and leadership of safety performance. Shehas worked in nuclear certification and safety of intercontinental ballistic missiles, joint airworthiness trials for military aircraft, design and development of defence systems, and as an expert advisor to NATO on human performance and safety critical systems..