Table schema:
CREATE TABLE table_name_89 (killeen_rate INTEGER, texas_rate VARCHAR, us_rate VARCHAR)

Question: Texas Rate smaller than 32.9, and a U.S. Rate larger than 5.6 is what highest killeen rate?
SQL: SELECT MAX(killeen_rate) FROM table_name_89 WHERE texas_rate < 32.9 AND us_rate > 5.6