acoustic sensing and processing of audio data using a network of distributed computing devices and sensors; acoustic and image sensing and processing of audio and image data using a network of distributed computing devices and sensors; detecting, identifying, and locating firearm discharge events using a network of distributed computing devices and sensors; detecting, identifying, and locating firearm discharge events using software for sensor fusion, data analysis, and visualization; detecting, identifying, and locating firearm discharge events using a network of distributed computing devices and acoustic sensors; detecting, identifying, and locating firearm discharge events using a network of distributed computing devices, acoustic sensors, and cameras; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles (UAVs) using a network of distributed computing devices and sensors; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using software for sensor fusion, data analysis, and visualization; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using a network of distributed computing devices and acoustic sensors; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using a network of distributed computing devices, acoustic sensors, and cameras; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using a network of distributed computing devices, acoustic sensors, and radar detectors; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using a network of distributed computing devices, acoustic sensors, and light detection and ranging (LiDAR) sensors; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using a network of distributed computing devices, acoustic sensors, cameras, and radar detectors; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using a network of distributed computing devices, acoustic sensors, cameras, and light detection and ranging sensors; detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles using a network of distributed computing devices, acoustic sensors, cameras, radar detectors, and light detection and ranging sensors; software as a service (SaaS) featuring software for receiving acoustic event data and notifications of acoustic events, determining locations of acoustic events, and storing electronic evidence of acoustic events; software as a service featuring software for receiving and analyzing audio and video data, determining occurrences and locations of events based on the analyzed audio and video data, and storing electronic evidence of the events; software as a service featuring software for detecting, identifying, and monitoring drones and unmanned aerial vehicles; software as a service featuring software for detecting, identifying, and locating firearm discharge events, storing electronic evidence of firearm discharge events, and providing real-time notifications of firearm discharge events to first responders; software as a service featuring software for sensor fusion, data analysis, and visualization in the field of detecting, identifying, and locating firearm discharge events; software as a service featuring software for sensor fusion, data analysis, and visualization in the field of detecting, identifying, monitoring, and locating drones and unmanned aerial vehicles; data archiving services, namely, storage of electronic evidence related to acoustic events; data archiving services, namely, storage of electronic evidence related to firearm discharge events; data archiving services, namely, storage of electronic evidence related to detection of drones and unmanned aerial vehicles