It is believed my husband was one that died with ALS, due to his exposure to Agent Orange, a chemical used to kill the foliage in Vietnam. He served two tours there out of his 35 years of Active Duty. He waded in the water contaminated with the chemical and had constant exposure to it. However, there are many other reasons and causes of ALS, a lot left unknown so far. Let us all find that cure for ALS! Tommie Thompson, wife of Richard George Thompson . Died March 18, 2013