Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Behavior_Incident (date_incident_start VARCHAR, student_id VARCHAR)
TABLE: CREATE TABLE Students (student_id VARCHAR, last_name VARCHAR)

### Question ###
Find the start and end dates of behavior incidents of students with last name "Fahey".

### Accurate SQL ###

SELECT T1.date_incident_start, date_incident_end FROM Behavior_Incident AS T1 JOIN Students AS T2 ON T1.student_id = T2.student_id WHERE T2.last_name = "Fahey"