The Homs complex is reportedly located adjacent to a chemical weapons production facility, and is responsible for testing new missile modifications and fitting ballistic missiles with chemical warheads. [1] The site includes a missile storage facility, perimeter defenses, and hardened underground bunkers. [2] Yiftah Shapir asserts that Syria may have constructed underground launch silos for Scud missiles at the site. [3]

Sources:
[1] Anthony H. Cordesman, "Syrian Weapons of Mass Destruction," 1st Working Draft, 2 June 2008, pp. 11-14, www.csis.org; Khalid Hilal, Leah Kuchinsky and Amin Tarzi, "Israel Sees Growing Missile Threat from Syria," WMD Insights, July/August 2007.
[2] Caroline B. Glick, "Fighting the Next War," The Jerusalem Post, 20 April 2007; Anthony H. Cordesman, "Syrian Weapons of Mass Destruction," 1st Working Draft, 2 June 2008, pp. 11-14, www.csis.org.
[3] Yiftah Shapir, "The Syrian Army Buildup," Strategic Assessment, August 2007, Vol. 10, no. 2, the Institute for National Security Studies, www.inss.org.il.