Flares / Blinding Lights in Halo 3
A recent video posted on Gamersyde indicates that there will be Flare’s in [tag]Halo 3[/tag] Campaign that act in a similar fashion to Flash Bangs. The Covenant can deploy a flare which will produce a blinding light when you look in the direction of the said flare for a few seconds.
There are no details on whether this will show up as a usable item in the campaign or multiplayer, but if it were, we’d imagine it to be some form of Equipment since there are already 4 grenade types.