My best friend and his 84 year old father are in a mobile home with no heat due to a three foot snowfall that I think is blocking the flow of oxygen to the air intake. This is an emergency. Where is the air intake on a coleman model 7995C856> Thank you for your help

Usually it is on the roof. Look on the roof top and see if there is a larger pipe with a hat on it. More than likely this is your fresh air intake. You can remove the snow but you'll have to get up on a ladder to do it. Use a broom and try not to get onto the roof much if possible. Or just go elsewhere until the snow melts away as you could easily get carbonmonoxide poisoning if you stay in the home with no fresh air and the gas furnace turned on.