Rayden fired one shot into the horde of vampires who were getting restless and quickly reloaded his guns. He noticed that his exposed skin had burns,probably due to jumping through the smoke. Shrugging off the pain,he said to Johnathan,"Time is a luxury we don't have! I want to save as many as I can,but I know some are not gonna make it! Take the ones you have with you and get your lousy ass out of here!". The flames and smoke were almost gone and the vampire horde had started to inch closer to the circle of humans.

((I just followed my limited knowledge of science. Water vapour is heavier than air,if i remember correctly,so theres gotta be a limit to how high it can go,right? Throw in the superhuman abilities of vampires and you'll get what i mean))