Multiple-launch rocket systems, or MLRS for short, are perhaps the most effective weapons the West has given Ukraine. Unlike conventional artillery, which fire shells, the M270 and its little brother the HIMARS fire rockets which travel much further and are much more accurate. In less than 60 seconds, these weapon systems can unleash a salvo of up to 12 rockets, then pack up and drive off before the target even knows they’re being shot at. This makes the a nightmare to find and destroy, and