In essence, because of the differences in the speed of sound vs. the speed of the bullets from a known cartridge (.223 Remington, in this case), the time lag between the last bullet hitting the pavement and the last audible report of the rifle muzzle can be used to very accurately calculate the range of the shooter (relative to the position of the person recording the video).
More importantly, when the audio from the Las Vegas shooting is analyzed, it reveals TWO shooters operating at the same time, not just one shooter. Shooter #1 is operating at 425 - 475 yards, which is consistent with the Mandalay Bay hotel, but shooter #2 is operating at approximately 250 - 270 yards.
This fact is encoded in the audio of numerous videos posted on YouTube. This is all explained in the video below, with detailed whiteboard calculations and diagrams:
https://vimeo.com/237467538
https://youtu.be/JxmEFeKy8aI
Mike Adams (aka the "Health Ranger") is the founding editor of NaturalNews.com, a best selling author (#1 best selling science book on Amazon.com called "Food Forensics"), an environmental scientist, a patent holder for a cesium radioactive isotope elimination invention, a multiple award winner for outstanding journalism, a science news publisher and influential commentator on topics ranging from science and medicine to culture and politics.
Mike Adams also serves as the lab science director of an internationally accredited (ISO 17025) analytical laboratory known as CWC Labs. There, he was awarded a Certificate of Excellence for achieving extremely high accuracy in the analysis of toxic elements in unknown water samples using ICP-MS instrumentation.
In his laboratory research, Adams has made numerous food safety breakthroughs such as revealing rice protein products imported from Asia to be contaminated with toxic heavy metals like lead, cadmium and tungsten. Adams was the first food science researcher to document high levels of tungsten in superfoods. He also discovered over 11 ppm lead in imported mangosteen powder, and led an industry-wide voluntary agreement to limit heavy metals in rice protein products.
Adams has also helped defend the rights of home gardeners and protect the medical freedom rights of parents. Adams is widely recognized to have made a remarkable global impact on issues like GMOs, vaccines, nutrition therapies, human consciousness.