Strategic Thrust--technology groups

OK guys,
	I'm now grouping all the weapons and there defensive systems
into catagories and I would like everyones input on this. I have a breif
description that I'm including with them. If anyone thinks that it
should be changed.....do it. If you want to elaberate on any or all of
the catagories please do.
	Well, here goes:
Particle Technology:
		weapon--matter that is progected through
space....ie...railgun
		defense--screen  or armor that will stop or deflect fast
moving objects
Beam Technology:
		weapon--energy that is projected throught space as a
stream...ie. standard beam battery
		defense--screen or armor that will stop or deflect
energy
Plasma Technology:
		weapon--plasma that is projected through space as a
mass...ie...pulse torp
		defense--screen that will detonate the plasma before it
strikes target or armor
If anyone has any other suggestions, feel free to add them

Thanks for your time and help,
Todd