Events of L.A. Noire
Hoover is encountered during the side-mission Cop Killer Shot, in which he is involved in a shootout alongside Officer John Sarsfield with two criminals who shot and killed a patrol officer. While exchanging gunfire, Hoover is wounded by a gunshot wound to the chest. After that, Cole Phelps and Rusty Galloway arrive on the scene and pursue the fleeing felons. Eventually catching up with them and killing them.