The 4th Station contains 2 videos under the modules tab. Before you begin with the video without answers we recommend you download and print out the fill in the blank answer sheet. The answer sheet can be found under the Additional References tab. The video without answers is approximately 46 minutes long with an introduction by Dr. Krishna Das, ABC's course director. There are 18 slides which contain multiple questions. During the first round, each slide is timed at 90 seconds. The video will cycle through the slides once more but now timed at 45 seconds. Once you have completed the exam, move onto the video with answers narrated by Dr. Das. The video is approximately 34 minutes in duration. We hope you find this product helpful in your AOBOG oral exam preparation and welcome any comments.