Big X
Searls' other military and aviation-themed novels included: "The Astronaut" (1962), "Pentagon" (1971), "Hero Ship" (1969), "The Big X" (1959), and "Altitude Zero" (1991). His other writings were "Firewind" (1981), "Sounding" (1982), "Blood Song" (1984), "Kataki" (1987), and "The Adventures of Mike Blair" (1988). He also wrote the novelizations of the movies "Jaws 2" in 1978 and "" in 1987.