the hospital. These "inflatables" required a power system called a "utility pack" (also known as a "U-pack" or "power station") to provide utility services, heat, cooling, inflation, hot water, and filtered air from CBR contaminants. The utility pack (power plant, utility, gas turbine engine driven - Libby Welding Co. Model LPU-71, Airesearch Model PPU85-5, AmerTech Co. Model APP-1, or Hollingsworth Model JHTWX10/96), powered by a centrifugal flow gas turbine engine, provided electricity (60 Hz AC, 400 Hz AC, and 24vdc). At 250 beds the hospital required eight U-packs. Each consumed 30 gallons of jet fuel per hour. After several years of using inflatables they were abandoned in the mid 1980s, largely due to the weight of the inflatables, and the amount of fuel required just to keep the tents from collapsing. Under the 1980s "Army of Excellence" Table of Organization and Equipment, the MASHs had the task of providing enough emergency, life-saving surgery so that patients could live to be evacuated to hospitals further to the rear from the fighting line. The Combat Support Hospitals were 200+ bed hospitals that, after the MASHs, were next closest to the front line. The CSHs "specialize[d] in performing surgery on patients whose condition [was] not life-threatening." Behind the CSHs, but still within the Corps rear area, were the 400-bed evacuation hospitals, which provided resuscitative and restorative care. The basis of allocation for planning purposes was one MASH, one CSH, and two EVAC hospitals per division supported, for a total of 1,060 beds per division. General Hospitals in the Communications Zone (if one were established) or in the Continental United States would provide definitive care. Actual bed requirements would be driven by combat intensity and the theater evacuation policy. Hospital Centers 9th Hospital Center (United States) (Fort Hood, Texas) Previously 21st Combat Support Hospital-deployed to New York in response to COVID 19 29th Hospital Center (United States) (Joint Base Lewis-McChord) Previously 47th Combat Support Hospital. Field Hospitals 10th Field Hospital (Fort Carson, Colorado) - part of 627th Hospital Center 11th Field Hospital (Fort Hood, Texas) - Formerly 21st EVAC, redesignated 21st CSH 1992; converted to 11th FH 2019 in 2017-2019 assigned to 9th HC. 115th Field Hospital (Fort Polk, Louisiana) 131st Field Hospital (Fort Bliss, Texas) - previously 31st Combat Support Hospital, reorganized and redesignated April 2018. 528th Hospital Center also established. 147th Field Hospital (Joint Base Lewis-McChord, Washington - previously 47th Combat Support