Josh! Josh! Josh!
You of all people should know better than to let you own brother go play in da MUD all by himself
is it electric or manual engaged most likley the selector let go not the chain
Looks to be manual, Big azz shifter in the transmission tunnel. if it is an electrical switch attached to the end of that monster it must be rated for the same amperage as the switch that lights up an electric chair.
Side note: lets just say I got some Staun beadlocks installed on my truck to day. And Lets also just say my truck is now sitting on the trailer on 4 tires that are loosing air around the valve stems at various rates. is there a way to reseal that from outside the rim? if i just take the nut and washer off, and put some of that weather stripping adhesive (the black rubbery stuff in the tube that gasoline wont take off) Let it rest with no airpressure overnight. then aired up in the morning would/could that work? I imagine if i just brought it back they would make it right, but that would burn up another day off and I am going offshore in two days.

Last time I went anywere without club members present was Barnwell mountain last year and I can pretty much honestly say I have never had less fun offroading than I did that time... Wait scratch that: the mud bog, that was less fun. But still. I dont think I want to be in the middle of texas depending on the kindness of total random strangers to get my ass out of a crack.
good. I was going home when my transfer case chain broke 
I no it takes eight bolts to take it off.