[Aquinasfan]

In other words, the guys in the tent would all be dead.

I had to reread it carefully myself. It sounds like the tent was set on fire by the grenade. I saw one of these things demonstrated on a cable show. It's not an anti-personnel device or a napalm equivalent. It's designed to create extreme heat (molten metal) in a very small area. It's designed for sabotaging equipment.

[Robert A Cook PE]

So he tried fraggin' his Sarge ...

... and screwed up by using the wrong kind of inflm. grenade.

.... But did you notice that the other killings (in Oregon) were also by burning? (In other words, while overseas, he tried to kill people he hated by burning out their tent ...and here (in the US) he (apparently) tried burning out people he hated by burning their house.)