Initially developed by Israeli defense company Rafael, American aid for Iron Dome means the system now pays dividends at home. The money that goes to Israel eventually comes back to the U.S., as Israel has agreed to allow American defense contractors to start manufacturing the system. Although heralded by most everyone as a success, criticism of Iron Dome centers on its cost and a fear of Israeli complacency. While an Iron Dome interceptor missile costs upwards of $60,000, Hamas can make crude but dangerous Qassam rockets for under $1,000. This disparity in cost is made more palatable, however, in that Iron Dome is smart enough to know which rockets to target based on where they are headed. If a rocket is headed toward an open area, Iron Dome operators allow it to hit the ground.