As another officer, Ryo might recognize Frederick as he rides out on his horse, heading in the direction out of the city. More so, he would definitely recognize the police issue bullet proof vest he's wearing over just tough looking clothes, almost like he's about to do some serious yard work. The axe strapped to his back almost seems to back this fact...

If it wasn't large enough that it looks more like it should be a museum exhibit on medieval warfare.

"I don't plan on going far out, if that's your concern."