Based on a very early Overkill interview mentioning cuffed police would be strapped with a bomb to persuade them into fighting for you. This was cut from the game before any footage was shown due to being morally dark, and all that remains are some implicating filenames and the distressed dialogue of converted units.

Units will wear an IED Collar once converted. When the Unit's health runs out he will explode, however this will deal no damage to enemies or players for the sake of being cosmetic and not game-changing.
The player can also wear the collar by equipping the Infamy 'Venger' mask. Some text strings have been modified in menus, inventory and in-game to match.

Installation
Extract IED Collars MOD to /mods.
Extract IED Collars OVERRIDE to /mods_override.

Credits
Dr_Newbie - Joker Masks mod, on which this mod is very heavily based.
Hoppip - Detonation code.
Bethesda - Fallout 3 slave collar, with a new texture and normal map by myself.
And a bunch of the boys on the MWS Discord for a helping hand.

Known Issues
Not compatible with Dr_Newbie's Joker Masks.