"Publishers Weekly" had praise for his 1995 novel "Spooker", stating: "Ing's earlier novels ("Butcher Bird", etc.) imaginatively described the special world of experimental aircraft and weaponry. Here he enters new territory, both geographically (California's Central Valley from Bakersfield to Fresno, detailed with accurate local color) and thematically, proving that he is a master of ground-based spy novels as well as of high-in-the-sky techno-thrillers. The high-tech touches that do appear, including an intriguing ultra-light aircraft, are pure Ing, who seems to have relished creating the peculiar world of his two monstrous villains. Tinged with a sense that life is bittersweet, this is a welcome offering from an always entertaining author."