Yes and no
You do not need a FASFA for the Academy; however, you may want to keep the FASFA application open in case you need Plan B. There are differing opinions on this, but what happens if you get an injury and can't attend BCT, or if you decide during BCT that the Academy isn't for you? Both of these happen to small percentage of appointees. Once awarded financial aid, you can always turn it down or simply not take the loans offered. Personally, we did not fill out a FASFA last year because our son's other option (AFROTC plus scholarships) was enough for him to attend CU if he wanted to go that route. However, without those in place, we would have had the FASFA application open.