Sheriff Britt Hallum:  Here 's your gun safe . I do n't know the combination .
Aaron Hotchner: Start with birthdays . Lou 's , Owen 's , Hope 's .
Derek Morgan: Hotch . Dress blues in plastic . No pics of wife and son .
Sheriff Britt Hallum: No luck .
Aaron Hotchner: Try 11 - 10 - 75 .
Derek Morgan: November 10 , 1975 ? What 's that ?
Aaron Hotchner: _ 1775 _ . Marine Corps birthday .
Sheriff Britt Hallum: You might have just sold me on that profiling of yours .