Technically, that line *could* be interpreted to include cannon and warships. One cannot say that naval cannon were not in common use around the time of the founding by the citizenry.
Of course some like to peek through history's looking glass only through a dim slender hairs-width of a slit. The whole picture is very scary. So we redefine words, change meanings -- make the Constitution "alive" like some Frankenstein's monster, rather than have it be the fearsome contract for Liberty that it was to have been.