IMO, TriCare is the perfect example of how screwed up government-run, single-payer healtchare is.
I'm retired AF, and use free TriCare as a secondary payer to my primary insurance that I get through my employer. While enjoying a "ladies' weeked" in Rehoboth Beach, DE last October, I tripped on a raised sidewalk edge and broke two ribs. Went to the ER, where my primary insurance pays all but $100. TriCare was billed for the $100, and they just paid it this week, 9 months later!