Table schema:
CREATE TABLE table_name_37 (call_sign VARCHAR, tail_code VARCHAR, weapon_systems_officer VARCHAR)

Question: Which Call Sign that has a Tail Code of oy belong to Weapon Systems Officer Capt Charles B. Debellevue?
SQL: SELECT call_sign FROM table_name_37 WHERE tail_code = "oy" AND weapon_systems_officer = "capt charles b. debellevue"