in the air force rpf, is there a prediction in the out years of payload size? because i think the assumption is they're going to stay about the same size as they are today. some are and some small. there are some trends going into tomorrow, probably be on the big side if we're going to do cube sets. maybe we don't need the lift. so all this talk about systems and lift capacity, the question is what are we lifting? and as electronics get smaller and smaller, it could be that lighter lift capacity is sufficient to do the job. i don't know. anybody have any answers on this panel? >> so the standard reference for tentacle performance remains what the air force calls the eight reference missions. and so they provide us with a set of orbits and pay loads lifted to that orbit. the most challenging of those orbits require our complete capability all the way to the atlas five with its five strappons and its largest pay load bearing. >> and part of it is orbit. part of it is weight. >> yes. and it's probably important to understand a subtlety within that, as well, which