You will have a military medical record jacket that will have your DoDMERB physical and any additional information that you have sent to DoDMERB inside of it. You will be given a medical questionnaire to fill out, you will have your height, weight and body fat measurements taken. If you need shots, those will be given. Blood will be taken for blood typing. You will have your vision screened.
You will be herded around like sheep, following colored lines of tape on the floor. It will be a stressful day, but once its over the fun really starts! Don't worry about it, just follow the herd and you'll be fine!