Aaron Hotchner:  Mr. Petosky , I 'm starting to lose my patience .
Galen Petosky: One more question : Edgewood Arsenal . What happened there ?
Aaron Hotchner: From 1955 to _ 1975 _ , the U.S. military conducted research into psycho - chemical agents by testing them on human subjects .
Galen Petosky: You pass .