Conversation so far:
What year did Grace Hopper retire?
Following a career that spanned more than 42 years, Admiral Grace Hopper took retirement from the Navy on August 14, 1986.
Where did Grace Hopper work at?
Grace Brewster Murray Hopper was an American computer scientist and United States Navy rear admiral.
What age was Grace Hopper when she retired?
79
What happened after Grace Hopper retired?
Following her retirement from the Navy, Grace Hopper was hired as a senior consultant to Digital Equipment Corporation (DEC).

Question: When did this end?
Self-contained rewrite: When did Grace Hopper's position as a senior consultant to Digital Equipment Corporation (DEC) end?