Hunter’s Blind

The story here goes like so.
A father/son hunting team has made contact with a pair of local yeti, and in an effort to establish territorial hegemony, has positioned themselves for strategic advantage just as their bait drew out their quarry. Father is standing lakeside with a bolt action 3030 deer rifle, having just squeezed off a round at yeti #1, who had not yet scented his son, a military combat veteran sniper only steps away in his blind under the large spruce tree, with a .50cal SCAR, flip down tripod, hp scope… trained on yeti #2. Father’s round was low and outside center mass, but still scored a nonlethal hit, and insodoing has set three things in motion, any of which may decide his fate in the next few fractions of a second. First, he has enraged the 2nd yeti, prompting her to attack from the treeline behind him. Second, the report from his rifle has dislodged a substantial quantity of snow from the branches above his sons hunting blind, which may or may not prevent the sniper from taking his one critical defensive shot, which is the only chance dad has at escaping certain death (at the hands of a furious yeti closing fast from behind him). Third, unbeknownst to any of these terrestrial combatants, a flying saucer has borne witness to these proceedings from the cloud bank above, and in response to the discharge of the first projectile weapon, has fired its own countermeasure, the directed arc plasma energy weapon seen coursing down through the sky, shocking the crow, passing into the tree toward the snipers blind. The big question is… what happens next?! Who will yet draw breath when the thunder again fades to silence?