fire. it lights up the fire handle. lights up fuel control switch. then we activate that switch on our own. we actually turn this fire handle. there are two separate bottles on the triple 7. we turn it to, either bottle it does not matter. it will electronically activate a squib which will discharge halon too the engine. this is all part of the check. very textbook procedure type stuff that we practice on every recurrent journey. david, when you look how big the fire is, in your mind is it possible this could have been a fuel loon ruine rupture or some else? looking at the damage on the airplane now, it is interesting. the leading wing, on the engine, severely damaged. wasn t just an engine failure. where all right fuel lines go into the engine area. this would explain possibly the