Physical training can also be bravely continued filming a challenge. Steven Spielberg during the six weeks it took wanted to show the real horror of war in Saving Private Ryan (1998) and he wanted his actors to feel like real soldiers. So he sent a group of them, including Tom Hanks, to a 10-day military boot camp. [a] They ran miles every day, slept outside in the freezing cold, and were given little food. In the end, all of them were physically and mentally exhausted.