Who says they have to be used as surface to air missiles.
I am sure they could be fired at any target a terrorist would like.
Al-Qaeda’s how-to guide for using surface-to-air missiles found in Mali
http://www.telegraph.co.uk/news/worldnews/al-qaeda/10115887/Al-Qaedas-how-to-guide-for-using-surface-to-air-missiles-found-in-Mali.html
The 26-page document in Arabic, recovered by The Associated Press in a building that had been occupied by al-Qaeda in the Islamic Maghreb in Timbuktu, strongly suggests the group now possesses the SA-7 surface-to-air missile, known to the Pentagon as the Grail, according to terrorism specialists.
It confirms that the al-Qaeda cell is actively training its fighters to use these weapons, also called man-portable air-defense systems, or MANPADS, which likely came from the arms depots of late Libya dictator Muammar Gaddafi.
It’s just a simple mixup. The “embassy” ordered 400 iPads and they were sent 400 MANPADS by mistake, so they thought they would give them away to the needy muzzlems.