Which vehicle has a load capacity of 3 litter or 6 ambulatory?

The vehicle that has a load capacity of 3 litter or 6 ambulatory is the M997. The M997 is specifically designed as an ambulance variant of the M998 Humvee and is equipped to transport patients efficiently under field conditions. Its design accommodates the needs of Combat Medics, allowing them to evacuate and transport both litter patients and ambulatory patients effectively.

In a combat scenario, the capacity to transport multiple patients is crucial for maintaining the continuum of care and ensuring that patients receive medical attention quickly. The M997 is equipped with suitable medical equipment and space to facilitate basic life support, making it an essential vehicle for medics in the field.

The other options, while being military vehicles, do not meet the specified patient transport capacity of 3 litter or 6 ambulatory. This highlights the M997's specific role and capability in medical evacuation and emergency response scenarios within military operations.