FYI, just found out today that if you are getting SSDI you have to take Part B before you separate to TDRL the sponsor will lose Tricare, but family can still sign up for Tricare. No one ever went over this with us. I only caught it at last minute while filling out application for Tricare and saw where it asked about eligibility for Medicare. I knew my husband was eligible over year ago for Part A and Part B, but SS told us we did not have to have it since active duty. When I called DEERS they said yes he has to have it and needs to have it in place before separation. Very confusing, thought I would post in case anyone else is getting close to separation. Of course you my call and get a totally different answer so check it out before you do anything.