How does the HMMWV ensure crew survivability in combat?

The HMMWV enhances crew survivability in combat primarily through the provision of blast protection and additional armor. This engineering focus is essential as it helps to shield the vehicle and its occupants from improvised explosive devices (IEDs), small arms fire, and other combat-related threats.

The additional armor can be either integrated or added as kits, adapting the vehicle to the specific threat environment while maximizing protection without compromising mobility. This combination is crucial since the HMMWV is often deployed in environments where vulnerability to explosive devices is heightened, making enhanced armor and blast protection vital for the safety of crew members.

The other options, while they may contribute to overall mission effectiveness or situational awareness, do not directly relate to the primary means by which the HMMWV ensures crew safety in the high-risk contexts of combat operations.