Published in 1988, this book is beat up and well-used.
From the back cover:
"On January 23, 1986, millions watched in horror as the space shuttle Challenger exploded during takeoff.
But NASA's greatest disaster was only a grim prelude to the nightmare to come. A conspiracy has taken root at the core of the US military machine as a fanatical group of the Pentagon's elite prepares to fulfill an ancient prophecy of ultimate destruction.
America needs a friend, and Hal Brognola, director of the Sensitive Operations Group, has just the man--Mack Bolan."