I'v e got 4 cops in my extended family, had 9 at one time. 3 are retired, and 2 passed on of natural causes. They all told me the same thing at one time or another.
I took a training class, about 20 years ago, when I was in my 40's. Now, at 65 years old ( nearly 66) I would imagine that there are some things I can use a refresher on, and some changes in tactics as an older man.
I realize there are some things that I just can't do any more, and that under stresses like that, you fatigue faster, too. So, yeah, it's time to do some re-training at an accredited school.