RIFL (Rigid and Flexing Laryngoscope) vs. Fiberoptic Bronchoscope

We will conduct a randomized trial comparing the success rate and time to intubation using the RIFL vs. the fiberoptic bronchoscope, as the latter is commonly held to be the gold standard of difficult airway devices. Specifically, we wish to compare the of intubation between the two devices in patients with potentially difficult airways as defined by an oropharyngeal class 3-4, BMI greater than 35, or in patients with a history of difficult intubation using direct laryngoscopy.