This is an interview question you can ask the interviewer. This is an important question to ask interviewers as programs often do not reveal detailed information about residents' schedules. Many programs don't allow you to do a rotation in one or more subspecialties, most commonly regional anesthesia, until your CA-3 year. If you are considering going into a fellowship for a field that you will not get to see until your CA-3 year, you will be in a challenging position. Apply to the fellowship as a CA-2 without having seen the field or wait to become a CA-3 so that you can see the field before applying. If you chose the latter, there will be a one-year gap between the end of your residency and the start of your fellowship.