Lyric discussion by lastanzabianca 

Cover art for S.O.S lyrics by Jerry Cantrell

S.O.S. is military lingo for a type of food they eat called "shit on a shingle" hence the lyric.

It's like mutten on a cracker or something like that.

@lastanzabianca Plus he\'s talking to his brother--same one from "Brother," David--and because they are not close (due to Jerry\'s lifestyle), he feels that he can\'t really talk to him, because they seem like strangers. Yknow: "no news here."