I don't think we talked about the E1 thing but it's his rank, and it's an entry level rank. You can move up in rank E2, E3 etc with work, time in, and training and then get in trouble and get busted down a rank or two as well. Assuming the tattoos are telling his personal story he shouldn't be an E1.
The missing person (deserter) was an honor grad per the news clip. It's odd to me he worked that hard and then ran off. If he isn't this JD then maybe he is another one over in the Texas or Missouri areas.
I generally assume people are dead if they have been gone that long though, and we all know that is far from true in some identified cases.
A deserter from Kansas (1956) was apparently just found to have lived into his 80's in Canada so.......it happens!
Army Ranks For Enlisted Personnel