I went ahead with a scouting mission and after wrecking the wheel on my truck, I had to walk to my abandoned battlefield objective. I finished it up, then looked for buildings with a vehicle (I searched multiple areas, even tried to find the FIA Group West Cell with no success, there was nothing at their marker). I continued South to the closest buildings and further away from home camp towards Fotia (the largest collection of buildings nearby not in the red zone) and just before reaching Fotia Kerry said "Where the hell am I? I should check my map" so I continued towards Fotia (now about 200 meters out) to check the houses and suddenly dropped dead without explanation.

Is this a bug or a poorly implemented way of containing the player's actions?