Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_37 (in_service INTEGER, unit VARCHAR)
### Question:
What is the highest In service for a vessel with a listed Unit of 12th minesweeper squadron?
### Answer:
SELECT MAX(in_service) FROM table_name_37 WHERE unit = "12th minesweeper squadron"