Be careful with this. not all airlines are the same. APC posted the Delta "Contract Comparison". Look at the Long-Term disability section. Some airlines, especially SWA, have serious limits that could leave you out on the street.
From the SWA section
If I had gone to work for SWA I would have been out of the street in 2 years from being diagnosed with cancer. All other are age 65, except maybe Delta, theirs is very confusing whether it's age 65 or 54 months maximum. Regardless TRICARE is nice to have as a backup.
Also, if you are going to get cancer, hope you get it before leaving AD. If not, prepare to hear the words "not service connected." Even if 4 others that were stationed in Kabul with you at the same time have the same cancer.