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_95 (tenure VARCHAR, cause_of_death VARCHAR, badge_serial_number VARCHAR)
### Question:
What is the Tenure of the Officer who died in a helicopter accident with Badge/Serial Number 16805?
### Answer:
SELECT tenure FROM table_name_95 WHERE cause_of_death = "helicopter accident" AND badge_serial_number = "16805"