Cell Tower Analysis Training

Im curious if any of you have any particular training in cell tower analysis. I was trained in this area while in law enforcement. After establishing my own forensic firm, I also completed Paraben's Mobile Forensic 3 course which concentrates on this area. It was a decent course for the purpose of refreshing and continuing training.

It has been a year since I took that course, and Im wondering if any the members here known of any additional training available in this topic and if anyone has taken them what they thought of those courses.

Thanks

Eric