Thomas L. Seamster is Senior Research Scientist at Cognitive & Human Factors, Santa Fe, USA. He has directed research in aviation human factors of air traffic control, crew systems and crew training with special interest in human expertise in computer programming, flight crew resource management assessment and spacecraft control. On the applied side, he has developed and tested user interfaces for both military and commercial systems and has developed expert and intelligent tutoring systems for the aerospace community. Recently, Dr. Seamster has conducted research in airline operating documents and, with Dr. Kanki, has co-chaired the NASA/FAA Operating Documents Group. He is co-author, with Drs. Kaempf and Redding, of Applied Cognitive Task Analysis in Aviation, Ashgate, 1997. Barbara G. Kanki is a Research Psychologist at NASA Ames Research Center with a Ph.D. in Behavioural Sciences from the University of Chicago. She has conducted crew factors research in both aviation and space systems; from flight crew communications and Crew Resource Management, to crew issues in ATC, maintenance and space shuttle processing. Customer collaborators include NASA, the FAA, the National Transportation Safety Board, as well as airline, military, manufacturer and union organizations. She manages human factors research under several NASA safety programs, and has conducted FAA-sponsored research in airline operating documents. With Dr. Seamster, she co-chairs the NASA/FAA Operating Documents Group and was co-editor with Drs. Wiener and Helmreich, of Cockpit Resource Management, Academic Press, 1993. Less