I agree with kinnem if you are talking about an HSSP. If you are talking about an ICSP, that question can only be answered by the det. However, typically a det. only may have one ICSP, through their unit funds. Additionally, getting an ICSP is very competitive, think type 1 competitive. 31+ ACT best sitting, not super score.
If you accept the det ICSP you must remove your package from the AFROTC HSSP. This becomes tricky since they can offer it in Sept., but meanwhile you do not have an admission to the school at that point. It is not an easy choice because you at that point or placing all of your eggs in one basket either way. Risk getting a lower level scholarship that you can take to any college or risk not getting admitted, but have a scholarship in hand.