I don't have ALS but two of my cousins, brother and sister-2 years apart in age, in their fifties caught this horrible disease. I truly believe they where contaminated many years ago. Their father was in the military (Army 30+years) who was stationed all over the world, in about every continent. There is strong evidence military service can and does pose a higher risk of contracting ALS and its not just the US military but modern militaries of many nations.