Starts at 3:45
http://www.youtube.com/watch?v=Wf9I-ejiuXE
I'm not sure, but it's probably in Omaha:
http://www.youtube.com/watch?v=O2b_5S6fIUo
I know this is from Omaha:
http://www.youtube.com/watch?v=X2thgk8zDlQ
Some very creepy sounding sirens in Omaha (1:28 )
http://www.youtube.com/watch?v=7DWkpFVajGg