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_56 (shts INTEGER, goalkeeper VARCHAR)
### Question:
What is the highest SHTS of Kasey Keller
### Answer:
SELECT MAX(shts) FROM table_name_56 WHERE goalkeeper = "kasey keller"