Technically it's GM's decision, but it's not listed as an example, and generally tactical networks are specialised for researching weapons, armor, tactics and so on. They can also be used for sensor targeting and indirect fire. While a tacnet could give advice on what to say to be intimidating, it won't really help with how well you could convey yourself in a way to be intimidating. Not that I can see, but someone else might be able to offer an argument for it.