What does the cryptic crossword clue "Working with CIA somewhere in the Midwest (7)" mean?

The definition is "Working". The wordplay uses an anagram. anagram of WITH (synonym="WITH") + CIA (synonym="CIA") = WICHITA The answer is WICHITA.

Working with CIA somewhere in the Midwest (7)

Independent Cryptic #11525 | 1 Across | 2023-09-19 flower