Stream of Navy airplanes land at Hilo airport yest

[TomK]

I see this all the time for my office, Carey is correct about the Navy using Hilo Airport for training. The only thing I'd disagree with is that it's rare they do touch and goes but usually practice approaches then go around well before the runway threshold before coming around again for another practice approach. That might explain why one approach looked higher than normal. The time between approaches is typically around 5 to 10 minutes which ties in with what you saw.