 This study is being done to see if we can improve the way we manage patients airways. In some instances patients who have a beard, who do not have teeth or have breathing problems during sleep present a challenge to the anesthesiologist. In such patients, it is sometimes difficult to provide airoxygen for breathing using a mask. The study doctors would like to investigate a new method for holding a mask on the face of those patients. They are interested in comparing a new method against two older methods. They believe the new method will deliver a larger amount of air to the lungs. This information may help doctors provide better care for patients who have beards, no teeth, or breathing problems during sleep. 