. >> by all accounts, shannon collins was living a normal life in pottsville, arkansas, working as a delivery man. after being medically discharged from the national guard with his wife teresa, son josh and stepdaughter brittany, they appeared to be the typical american family. >> he was a big family man. he always wanted to make sure everybody was happy. >> but appearances can be deceiving. shannon was secretly having an affair and his brother blake knew all about it. >> shannon told his brother that the marriage had been over for some time. he had been seeing somebody else and that once his son finished college, they would split ways. he had actually seen that woman shortly before he returned home. >> according to blake, shannon spent lots of time on the road doing deliveries, but he'd often call and check in. >> he started doing deliveries just to sort of make life easier for his family with, you know, money, because he spent a lot of time on the road driving with deliveries. he would call him, he would call their parents, and they would spend a lot of time speaking on the phone r