A CNN team and Human Rights Watch found dozens of empty crates marked with packing lists and inventory numbers that identified the items as Igla-S surface-to-air missiles.

The list for one box, for example, written in English and Russian, said it had contained two missiles, with inventory number “Missile 9M342,” and a power source, inventory number “Article 9B238.”

Grinch SA-24s are designed to target front-line aircraft, helicopters, cruise missiles and drones. They can shoot down a plane flying as high as 11,000 feet and can travel 19,000 feet straight out.