Study Population:Patients undergoing BE screening and surveillance will be enrolled after written, informed consent. BE definition- columnar mucosa in the distal esophagus of any length with intestinal metaplasia on biopsy. The BE length will be measured from the gastroesophageal junction to the proximally displaced squamo-columnar junction. The patient demographics (age, gender and ethnicity) and the BE length will be recorded. Total time required for each procedure will be recorded - from endoscope insertion to removal.