Ranger vs Zombies

Joe is a weird guy. He lives at farm with his wife and three kids, and in his free time, he drinks beer after beer. This is nothing odd, but lets talk about his hobbies... He loves to fly with jetpack. He has one in the barn, and every morning before the work, you can see him flying around his farm. Is he crazy? Who knows, maybe he is... However, when first zombies started to appear nearby the village in which Joe is living, jetpack came handy. He can fly above them, and shoot them down. It is certainly easier this way, then just walking on the ground, and fighting them face to face. Help out Joe in this uneasy situation. Have fun.