Does the PPC have a training hall of some kind? Seeing as agents from continua that don't have things like guns or lightsabers would need to get training in order to know how to properly use them, it seems like something that should have been mentioned by now. Or do agents just portal to different continua and train there?
Honestly, all that would really be needed would be a big empty room and a speaker system of some sort to play appopriate training-montage music. Heck, why not just use training montages to train agents in different weapon use? It would fit with the PPC's theme.

Also, I have another question: is it possible for agents to visit various continua when not on missions? I could see an agent from the Pokemon continuum visiting his/her family, or maybe a couple of agents going to the Monster Hunter continuum to test out Sue weaponry, or to Remnant to restock the Armoury's supply of Dust, or even just trips to the Subnautica continuum to relax. As long as the agents don't mess with the canon itself, it seems like something that people would do.