Herold had trudged through the debris and mud for Emperor knows how long, once the explosion had hit. It was lucky he and his companions had made it a distance away, as well as having ample cover. The bits of rockcrete and Orkish limbs that had fallen from the sky, not to mention the dust, had seemed apocalyptic. Luckily, the Valkyrie had not delayed in its arrival, and upon the plateau it lowered itself so the others could jump in. 

Unfortunately, just as Herold was hauling his armored bulk into the gunship, a guttural cry and bellow was heard from behind them, and a Greenskin unlike any he had ever seen before emerged on a mechanical throne. He'd thought all of the Orks had been killed initially, but Herold should have guessed that the Orkoids wouldn't be dispatched so easily. They infected every planet they ever touched, and it would take explosions across the entire world before they'd be exterminated for good. 

"Valkyrie!" Herold cried over the engines, pointing his finger at the approaching horde while instinctually searching himself for his combat shotgun. "Take that Warboss down!" His gun didn't have the range to kill the Orkoid or his followers just yet, and if they allowed them to get closer, they could detonate the fuel depot and kill the entire team. If no one did something quickly, he'd hop off the Valkyrie and get up close to take him out if he had to.