In Spider in the Web, Sheridan is looking at the death records of Abel Horn, a Free Mars terrorist who apparently is quite alive. Horn was "killed" in 2258. On the computer display when Sheridan is going over the records of the space battle Horn died in, if you look very closely, you will see that he was shot while attacking the heavy cruiser "Pournelle". Anyone who knows sf author Jerry Pournelle's love of modern military weaponry and gadgets would find this very appropriate.