In 1998, the Australian Defence Forces approved this technique for the Special Air Service Regiment. Senior nutritionist at the Australian Defence Science and Technology Organisation Chris Forbes-Ewan is quoted as saying that, unlike in sport, "all's fair in love and war." "What we are trying to gain is an advantage over any potential adversary," Forbes-Ewan said. In this study, over 50 performance-enhancing drugs and techniques were rejected. The six that were approved are caffeine, ephedrine, energy drinks, modafinil, creatine, and blood-loading.