Brook Army Medical Center (BAMC) is a Level I Trauma Center at Fort Sam Houston, just outside of San Antonio, Texas.
If you are unlucky enough to mangle your body in a car wreck, you could at least plan to do that in the San Antonio area. They have three Level I Trauma Centers -- BAMC, Wilford Hall Medical Center at Lackland Air Force Base, and the University of Texas Medical Center.
Seattle, with a larger overall population, has one Level I Trauma Center at Harborview in down town Seattle. Harborview is owned by King County, and managed as a teaching hospital by the University of Washington. All staff are university employees, all physicians are medical school faculty.
Level I Trauma means they have a team of surgeons, burn specialists and so forth on site 24 hours a day.