I only expect to hear from you if you are on a JS listing. Normal non rev - don't care. Deadhead - don't care. Paying Pax - don't care. Just the JS listings should be checking in. Why? Here's why. The JS is at my discretion. No other seat is. Unless you are causing a disturbance, but you get my drift. I can only decide yay or nay on the jump seat. So if you are listed as a jump seater, I want you to check in. Even if you have a seat in the back. Normal non rev - please don't check in.