The design is a technical marvel, but it won't keep the metal from corroding, and this isn't the first sign of trouble -- a few months ago, a different AJ-26 bl

The design is a technical marvel, but it won't keep the metal from corroding, and this isn't the first sign of trouble -- a few months ago, a different AJ-26 blew up on a test stand. It isn't yet clear that the engine was at fault in the Antares fire (trouble in the tankage or fuel lines could have cascaded down, among other fun possibilities) -- but if the engine does turn out to be at fault, the remaining stock will certainly get more attention.