{
  "$type": "site.standard.document",
  "description": "Day 21 centers entirely on prosecution expert Judson Welcher of Aperture LLC, an accident reconstructionist and biomechanical engineer. The day opens with a voir dire in which defense attorney Alessi extracts that prosecutor Brennan suggested changes to Welcher's PowerPoint, and that adopting colleague Steven Burgess's revised timing variance causes the alleged collision trigger window to partially overlap with a device lock event on O'Keefe's phone — a material shift in the prosecution's timeline. Welcher then testifies at length on three fronts: Toyota Techstream data placing a high-speed reverse acceleration event at 34 Fairview between 12:32:04 and 12:32:12 a.m.; photogrammetric analysis of Ring doorbell footage ruling out the driveway contact as the source of tail light damage; and biomechanical testing linking O'Keefe's arm lacerations to the Lexus tail light geometry. Before the jury is dismissed, Judge Cannone strikes Welcher's ultimate opinion that the Lexus struck O'Keefe, reserving her ruling on whether that conclusion falls within permissible expert testimony. The defense argues collision is the ultimate jury question; the prosecution responds that mens rea — not the collision itself — is the ultimate issue at trial.",
  "path": "/trial-2/day/21/",
  "publishedAt": "2025-05-27T00:00:00.000Z",
  "site": "at://did:plc:vd3vzujxkxsthkswrc2zzupm/site.standard.publication/krt",
  "title": "Day 21 — Welcher (Voir Dire/Direct)",
  "updatedAt": "2026-06-08T13:28:24.184Z"
}