Literally every other calfire tanker base that accepts LATs does simultaneous loading/fueling. LATs are single point fueling. Most of the time the fueling is complete before the retardant is done being loaded. It never slows things down unless a truck breaks or takes a long time to get there. It takes WAY longer to load, fire up, park, shut down, get fuel, fire up again (or get fuel then load) than to do it simultaneously. If the goal is to get max retardant to a fire, it doesn’t make sense, for LATs.