... um, actually we're talking about the RenrakuAustralia product, the BoomerEye (p. 24, Run & Gun), and what could be done with it. Boomerangs do make a very distinctive, and moderately loud, noise all on their own - you'd be counting on the individual to not recognize what the hell the sound is, and the light levels to be low enough that the BoomerEye goes unspotted during its two-Turn flight. So the goal is for it to go effectively unidentified, if not effectively unnoticed.