Wait, so what's this blowback thing again?

Well, take for example when we depose a dictator and proceed to lose track of thousands of his stockpile of shoulder mounted surface to air missiles.

ABC News reported today U.S. officials and security experts were concerned some of the thousands of heat-seeking missiles could easily end up in the hands of al Qaeda or other terrorists groups, creating a threat to commercial airliners.

"Matching up a terrorist with a shoulder-fired missile, that's our worst nightmare," said Sen. Barbara Boxer, D.-California, a member of the Senate's Commerce, Energy and Transportation Committee.
Though Libya had an estimated 20,000 man-portable surface-to-air missiles before the popular uprising began in February, Assistant Secretary of State Andrew Shapiro told ABC News today the government does not have a clear picture of how many missiles they're trying to track down.

"We're making great progress and we expect in the coming days and weeks we will have a much greater picture of how many are missing," Shapiro said.

The missiles, four to six-feet long and Russian-made, can weigh just 55 pounds with launcher. They lock on to the heat generated by the engines of aircraft, can be fired from a vehicle or from a combatant's shoulder, and are accurate and deadly at a range of more than two miles.

And then they turn up, some years later, somewhere else, in the hands of our enemies.

TIMBUKTU, Mali (AP) — The photocopies of the manual lay in heaps on the floor, in stacks that scaled one wall, like Xeroxed, stapled handouts for a class.

Except that the students in this case were al-Qaida fighters in Mali. And the manual was a detailed guide, with diagrams and photographs, on how to use a weapon that particularly concerns the United States: A surface-to-air missile capable of taking down a commercial airplane.

The 26-page document in Arabic, recovered by The Associated Press in a building that had been occupied by al-Qaida 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. And it confirms that the al-Qaida 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 ex-Libyan strongman Col. Moammar Gadhafi.

Update:
At least 400 more surface to air missiles were stolen in the Benghazi attack.  Awesomesause.