The Hunter Killers by Dan Hampton
A well researched look at the creation of the "Wild Weasel" program by the US Air Force during the Vietnam war. The effective SAM (Surface to Air Misslle) was a new thing, and the Russians were providing them to the communists in North Vietnam. So the Air Force put radar tracking equipment in planes, along with an Electronic Warfare Officer (EWO), to track down the SAM sites and take them out before they could take out the attacking aircraft.
Grey Lensman by E.E. Smith
Part of the classic Lensman series, from which all Space Opera springs. It's the story of Kim Kinnison, the result of thousands of years of selective breeding by an ancient race, to save civilization from the forces of tyranny. It has massive space battles, planet destroying weapons, intrigue, aliens, battles of the mind, and true love.
Let's not forget the space axe. Space Armor is proof against bullets and death rays, so the heroes use a specialized 30 pound axe to kill their foes.
A ripping good yarn from the Golden Age of Pulp. SciFi Grandmaster Robert Heinlein considered Smith a mentor, and echos of the Lensman series can be found in Heinlein's work as well as Ringo, Weber, Halderman, and many others.
Murder by the Book by Rex Stout
Stout at the top of his game in this Nero Wolfe mystery. A pair seemingly unrelated murders are presented to Wolfe, who makes the connection and sets on the trail of the killer. He and Archie Goodwin are presented with two more murders while tracking the murder who almost got away with it.
Son of the Black Sword by Larry Correia
I've always been much more of a hard SciFi fan than fantasy, but I like Larry Correia's fast paced pulp style. I started listening to little bits of this book at the end the weekly Baen Books podcast. When I got a dead tree version, I chewed through it pretty quite. Good adventure with a reluctant hero who has, like some of the characters in his Monster Hunter International books, been given the 'short straw' by the gods. Larry Correia is a pen and paper RPG geek from way back, and this book show some serious world building. If you want some fast paced fantasy adventure, where the author was clearly chuckling when writing parts of it, give this book a read.