Missle production: Just outside the town of Be'er Yaakov lies Israel's main missile assembly facility. There, in a long building, the Jericho and Arrow missiles as well as the Shavit launch vehicle are assembled. The Jericho's and Shavit are assembled in one area, the Arrow in another.
Proximity trouble: The U.S. has expressed concern about the proximity of the two assembly halls since the U.S. provides technology for the development of the Arrow - a missile meant to improve on the Patriot anti-missile system. The U.S. also views the Jericho as a missile proliferation problem. The missiles are presumably shipped to the Hirbat Zekharayah missile field via a rail line that runs out of the factory and connects to the main Tel Aviv-Jerusalem line that runs past the missile field.