Watch a few minutes from a couple of these if you can:

This one is on Shell Shock: https://www.youtube.com/watch?v=faM42KMeB5Q

https://www.youtube.com/watch?v=2QRftl3vFZ4

https://www.youtube.com/watch?v=2QRftl3vFZ4https://www.youtube.com/watch?v=yWJB6Y-3N5o

https://www.youtube.com/watch?v=3bggGLzk6cQ&list=PL20941FE5572F0C17&index=6

https://www.youtube.com/watch?v=hgkxezEvI2I

https://www.youtube.com/watch?v=ck6wACEENIw

https://www.youtube.com/watch?v=CxOrzgd3xWI&index=5&list=PL20941FE5572F0C17