Good afternoon, can someone please explain to me - Barney-style - what the difference is between a regular, voluntary retirement and a Chapter 61 w/20 years. I have 19+ years in and am facing a MEB board soon. I can't voluntary retire because I have an ADSO incurred from transferring my Post 9-11 GI Bill to my daughter. I am just trying to see what my options are and what I have to lose if I am found unfit while going through the MEB/PEB process.