In 1940, he responded to a request from the United States Secretary of the Navy to help the Navy prepare for war, thus beginning what turned out to be Booz Allen's long-term and continuing service to the federal government.
In the US, Computer Sciences Corporation's Federal Consulting Practice, Booz Allen Hamilton, and Deloitte Consulting LLP, amongst others, have established a profile for consulting within government organizations and functions.
Early in her career,McKinstry held management positions with Booz & Company (formerly Booz Allen Hamilton), an international management-consulting firm, where she focused on assignments in the media and technology industries.