Cole Tomas Allen, the suspect in the White House Correspondents' Dinner shooting, was featured in a resurfaced video on social media.
Allen, 31, a teacher and game designer from California, demonstrated a prototype he developed to enhance the safety of wheelchairs almost ten years ago.
In the re-emerged footage, Allen discusses the creation of a prototype for an emergency brake designed for wheelchairs.
Allen's past has come under scrutiny as he faces two charges for using a firearm during a violent crime and for assaulting a federal officer with a dangerous weapon.
According to his LinkedIn profile, Allen completed his undergraduate studies at Caltech in 2017 and obtained his master's degree in computer science from Cal State University - Dominguez Hills in 2025.
A manifesto sent to family members minutes prior to the attack revealed Allen's strong opposition to the Trump administration and his identification as a 'Friendly Federal Assassin'.
