Alarm contacts are touch-sensitive contacts embedded in the glass that will send an alarm if anybody touches the glass. If somebody is calling the shots, they are in control. Billiard players who are good can call the shot - say which ball will go into which pocket.

1. Contacts = connections, or contact plates. There are stuck to the glass as part of the alarm system. 2. The original phrase is "to call the shots", meaning to be in command and give orders. Apparently it comes from clay pigeon shooting, even though it's commonly used in billiards or pool. "Shot-caller" is the adaptation of this phrase. I see you're watching Prison Break now! :) PS. "Enunciate" is a verbal action, literally to speak clearly. Perhaps you were thinking of "elucidate".

I'm not sure about the first statement... I've never heard of "alarm contacts". 2. I know you want to be shot caller and everything, and that's cool A "shot caller" is slang for someone that makes the important decisions. For example, the owner of a business is considered a "shot caller", because he/she makes the important decisions for the business. It's a phrase that isn't used very often. Number 2, is saying... I understand that you want to be the boss and I'm okay with that..