But I guess not, maybe, is this a contradiction? Can they snap shot at the ground, but not a flyers. Is that what they are saying?
Q: How do maelstroms, novas and beams – or indeed any weapon that doesn’t need to roll To Hit or hits automatically – interact with Zooming Flyers and Swooping Flying Monstrous Creatures? (p13) A: Only Snap Shots can hit Zooming Flyers and Swooping Flying Monstrous Creatures. Therefore, any attacks that use blast markers, templates, create a line of/area of effect or otherwise don’t roll to hit cannot target them. This includes weapons such as the Necron Doom Scythe’s death ray or the Deathstrike missile of the Imperial Guard, and psychic powers that follow the rule for maelstroms, beams, and novas.