The TIS is a modular, buildable system capable of transporting up to three litter patients
or four ambulatory patients in each module.
howitzer, 26 combat troops, or 24 medical litter patients
HMMWVs serve as cargo/troop carriers, automatic weapons platforms, ambulances (four litter patients
or eight ambulatory patients), M220 TOW missile carriers, M119 howitzer prime movers, M1097 Avenger Pedestal Mounted Stinger platforms, MRQ-12 direct air support vehicles, S250 shelter carriers, and other roles.
It is capable of evacuating four litter patients
or eight ambulatory patients at a time.
For medical evacuations, it can carry up to 74 litter patients
It was then flown to Greenville, TX where Raytheon Corporation, an Air Force contractor, installed specialized medical ship-sets to include a liquid oxygen system that supplied all litter patients