Non-lethal (tranquilizer) rifles
Standard body armor
Riot soldiers are special GDI units used during the Firestorm Crisis. They appear to use a non-lethal weapon that fires tranquilizer darts, intended for pacifying rioters. As such, they are largely useless for actual fighting purposes, although they will cause tranquilized infantry to flee upon being fired at.
Technically, they are a map-specific modification of the Elite cadre unit, and can only be placed in the standard game if the Elite cadre has been modified or copied.