 The specific aim of this study is to correlate findings between two commonly-used types of swallowing studies: videofluoroscopy and flexible endoscopic evaluation of swallowing FEES. Specifically, the timing of swallowing events will be correlated between teh two studies. In addition, the pharyngeal constriction ratio a validated measure of pharyngeal strength on videofluoroscopy will be compared with the pharyngeal squeeze maneuver an assessment of pharyngeal strength on FEES, with the hypothesis that there will be a strong correlation between PCR and pharyngeal squeeze. 