Okay, check this out. Here is the scanner transmission containing Gliniewicz's last words.
https://www.facebook.com/abc7chicago/videos/10153686351536162/
Now compare it to one of his facebook videos in 2009.
https://www.facebook.com/TheOriginalGIJOE/videos/vb.1014385994/1155794367748/?type=2&theater
There is clearly a difference in his voice over the past 6 years. It goes from a strong high-toned military voice to one that now sounds more like a sore frog. This concerns me. I'll keep searching for more recent footage. But his voice change over the years does not sound right at all.
FYI Big Bread, it's really not a fair comparison to compare the radio traffic with the audio on that video. I'm a former radio electronics technician and I recognized the fact almost immediately that the radio system that the officer and dispatch is using is a digital system.
In the video, the audio is most likely an analogue recording. However, even if it is a digital recording, it's at a much higher sampling rate and a much better quality than the over the air police system is.