The decoy grenade should project a hologram of your faction's default Heavy Assault standing and unmoving for 10 seconds after coming to a rest on the ground in addition to current functionality of emitting weapon fire noise and showing on the minimap as a shooting soldier. The hologram does not show hit markers, can not be q-spotted and can be walked through as if it wasn't there. This allows aware players to identify the decoy as a decoy, however unobservant enemies would be more distracted by the decoy. This creates a skill test for the enemy of the infiltrator and one infil can capitalize on should the enemy fail this skill test.