Uvalde School Shooting Trial: Day 10 Morning Testimony on Ballistics and Timelines

Crime Scene Documentation with 3D Scanners

• 💡 Texas Ranger Cody Allen explained the use of Leica Geo Systems scanners to create accurate 3D models of crime scenes, including the Robb Elementary campus.
• 🎯 These scanners document distances and spatial relationships but do not record time, requiring other sources like body cameras for temporal data.
• 📌 The scanner was used to document the scene the day after the shooting, capturing details like vehicle placement and building outlines.

Ballistics and Exterior Evidence

• 🔬 Ranger Nick Hill, an investigative analyst, detailed the collection of fired cartridge casings and projectile defects.
• 📊 Analysis of casing types (LC22, LC21, Remington, 9mm Luger) helped differentiate between shooter and law enforcement rounds.
• 🔍 The investigation mapped casing locations in relation to bullet impacts on the building, noting no defects on certain walls despite nearby casings, suggesting shots were not fired into the building at those points.

Timeline Synchronization and Analysis

• ⏱️ Ranger Hill synchronized data from various sources, including surveillance video, body cameras, and dash cams, to establish a precise timeline of events.
• ⚠️ Discrepancies were noted in the accuracy of funeral home video timestamps compared to synchronized phone data.
• 📍 The animation created by Ranger Hill depicted the shooter's path and officer movements, synchronized with audio from multiple sources.

Officer Response and Decision-Making

• 🚨 The timeline highlighted Adrian Gonzalez's arrival and actions, noting his report of "shots fired" and subsequent entry into the school.
• 🚶‍♂️ The defense cross-examined the timeline, questioning the lack of detail regarding Officer Hill's initial response and the unaccounted time for Gonzalez's actions.
• ⚖️ Discussions focused on the critical nature of timeliness, communication, and officer decision-making under high-stress active shooter scenarios, including prioritizing civilian safety.

Firearm Analysis and Ballistics Data

• 💥 A detailed breakdown of fired cartridge casings was presented, indicating 173 rounds from the shooter and 35 from law enforcement.
• 🎯 Analysis of projectile defects and casing locations informed conclusions about the shooter's trajectory and firing positions.
• ⚠️ The investigation considered factors like accidental discharge, muzzle control, and trigger discipline when analyzing bullet impacts and casing placement.