[BradyLS]

to practice cloaking? Excuse my ignorance, but what is that?

It's a Star Trek concept. A way to render a ship or other thing invisible to the degree that you can't see it nor accurately detect its location, though perhaps you can discover tell-tale signs of its presence.

[knarf]

Almost scary how much of Star Trek has become fact, eh ?

[Izzy Dunne]

Watch for those tachyon particles. Or is it tetryon particles?