In addition to the points of the commenters before me, I'll point out that communication between CDF soldiers while in combat armor is specifically described as being performed via tight-beam laser links so as not to give away their position with BrainPal EM chatter.

Really, Scalzi thought about this kind of thing. He's pretty thorough.

"In many ways, the work of a critic is easy. We risk very little yet enjoy a position over those who offer up their work and their selves to our judgment. We thrive on negative criticism, which is fun to write and to read. But the bitter truth we critics must face, is that in the grand scheme of things, the average piece of junk is more meaningful than our criticism designating it so. But there are times when a critic truly risks something, and that is in the discovery and defense of the new. The world is often unkind to new talent, new creations, the new needs friends."

That's "apostrophe or quotation-mark", not quotes around the slash.