' professor at california's occidental college, and the father of green beret staff sergeant scott studenmund. studenmund interviewed all but two of his son's teammates, and has methodically and repeatedly reviewed every line of the declassified investigative report, in a personal quest to understand how and why his son died. were you satisfied with the investigation? >> woody studenmund: how can a parent be satisfied with an investigation into their son's death, when the basic cause hasn't been corrected? and that is that the b-1 bomber sniper pod was not capable of seeing the strobes that the green berets were wearing. so, they dropped the bombs. >> whitaker: in a skype interview in 2017 from his headquarters in qatar, we asked general harrigian, who led the investigation, why the bomber crew didn't know their targeting system could not see infrared strobes on the soldiers' helmets? how is it possible that the air crew didn't know what their plane was capable or incapable of doing? >> jeffrey harrigian: they should have known, quite frankly. that's part of the academics that are given to th