How big is the F-35 Joint Strike Fighter? By one set of measures, it is three times bigger than the Eisenhower Interstate Highway System, ten times bigger than either the Apollo Project or the International Space Station or Hurricane Katrina, or one hundred times bigger than the Panama Canal. These comparisons are only moderately outlandish. US$1.45 trillion is the Pentagon’s own December 2010 estimate of lifetime operating and supporting costs for the 2,443 copies of the F-35 currently on order by the United States government, which we can then compare to the known price tags, in 2007 dollars, of these five projects.[i] Costs—also variously prefaced as procurement, actual, sunk, fly-away, upgrade, true and so on—and their contestations are central to a discourse of accountancy that surrounds all projects that require large-scale mobilization of public power. But enormous as they are, these numbers still cannot capture the size of this particular weapons program. To understand just how big the F-35 is, I wish to suggest in this two-part post, we ought to conceive it as a proper assemblage—a heterogeneous association of human and nonhuman elements that is at once split, processual, emergent, and, most importantly, constitutive of the modern international.