Good evening Mr. Sher. Just wanted to drop you a line and thank you again. I was in your "Electronic safe lock" and "Principals of safe lock manipulation" classes at the Clark Security convention in Anaheim. I was the one who got a prize for manipulating my lock first, we also had lunch with one of the other students, ( we talked about his new air conditioning unit he had installed in his home). I was wondering if you could send me an e-mail address for you. I wanted to share a brief story about my opportunity to open a Hamilton bank vault since the class. Thank you. Bill Stagg (Owner) San Diego Lock and Safe