where are we with this? we're not looking to invent a gun. where are we in the process of using this ability to have sound go in a bullet as opposed to a wave? >> so right now we are in the principle stage. we in our laboratory we have developed a fundamental th theoretical and computer for the creation of the sound bullets which means we've been able to test and demonstrate their feasibility and experimenting in the lab. it was done in solid media. we're bringing the technology forward trying to design a lens that's more automated, more controllable and scaleable and also that is capable of generating bullets that travel in water, for example, so that they're closer -- for example, for underwater detection of vehicles similar to sonars or in the human body. >> very, very interesting. we'll watch this with great interest. kiara is an assist cant