U.S. Army Soldiers from the 549th Military Police Company, 3rd Military Police Battalion, 3rd Infantry Division use the winch from their armored security vehicle to open a steel door while conducting a cordon and search in Mosul, Iraq, Oct. 4, 2006. (U.S. Army photo by Spc. Christa Martin) (Released)
Note the use of an M-1117 Armored Security Vehicle, a 4×4 that is used heavily by the Military Police. It has several advantages over the Humvee, but it seems clear that a capable replacement for the relatively vulnerable Humvee is not a terribly high priority.