Sentence:  We had to get out of the <WSD>kill zone</WSD> if at all possible. We were also told if a truck in front of us gets hit and will not move, not to stop, but to go around it and get out of the <WSD>kill zone</WSD>. 
Meaning of the word marked with <WSD> tags:  The area of engagement where an attack on the enemy is focused and which has the highest percentage of fatalities.