America, or more appropriately Senator John McCain, had already channeled 100 deadly Stinger missiles into the hands of al Qaeda’s worldwide network, a blunder that has raised civil aviation security concerns around the world. A few were used against Syrian helicopters with great success, however the majority have disappeared.
https://
m.journal-neo.org/2015/10/11/where-will-the-stinger-missiles-mccain-gave-al-qaeda-show-up/
Well one learns stuff here;
FIM-92 Stinger ( I guess there are different ones)
The FIM-92 is a man-portable anti-aircraft missile system in use with with US regular and special operations forces.
The Stinger uses an infra-red seeker head in the missile to acquire and home in on its targets, usually the hot exhaust from an aircraft's engine. It can be used against any airborne threat below 12,000 feet but is especially lethal against helicopters and low flying attack aircraft. The launcher tube can be reused and reloaded with more missiles. It can be operated by one person although it is typically operated by two.