After North Korea conducted its most successful-ever test of an intercontinental ballistic missile on Friday, the US and South Korea responded the way they always do – with a massive display of force. South Korea displayed a particularly interesting capability with a domestically-designed Hyunmoo-II missile launch that penetrated deep into an underground bunker and vaporized a dummy. The launch resembled an operational strike as it was quickly announced, carried out, and devastated its target. Watch the Hyunmoo-II penetrate through yards of solid earth before sending fireballs shooting out of either end of the bunker.