Crosby joined
Northrop Grumman in 1981 as special assistant to the senior vice president of the marketing and technology department. In 1983, he was appointed director of the group's Washington D.C. office and became its vice-president and general manager in 1985. In 1991, he became vice-president of the business and advanced systems development branches of the B-2 department. He was appointed corporate vice president and general manager in 1994. When in 1995 the company announced the merger of the military aircraft and B-2 departments, he was appointed deputy general manager of the military aircraft systems branch. In 1996, he became deputy general manager of the civil aircraft branch and he was called to the post of general manager B-2 in September of that year. Finally, he ended his career in the company after being appointed in 1998 president of the integrated systems branch. == Career at EADS ==