Which version B-58 aircraft model originated in the United States has 2 in service?
CREATE TABLE "aircraft_inventory" (
  "aircraft" text,
  "origin" text,
  "type" text,
  "versions" text,
  "in_service" text
);
SELECT "aircraft" FROM "aircraft_inventory" WHERE "in_service"='2' AND "origin"='united states' AND "versions"='b-58';