Before revision:   In this technical report, we describe a newly developed tool, the Video Event Reconstruction and Analysis (VERA) system , that enables the localization of a shooter from just a few videos that include the sound of gunshots using established machine learning techniques and straightforward physics models. This tool relies on other tools we have already developed including video synchronization and geolocation to order unstructured videos lacking metadata over time and space, and sound detection algorithms.
After revision:  In this technical report, we describe a newly developed tool, the Video Event Reconstruction and Analysis (VERA) system . This new tool brings together a variety of capabilities we have developed over the past few years ( including video synchronization and geolocation to order unstructured videos lacking metadata over time and space, and sound detection algorithms.