The 4th Global Event for Tom Clancy's The Division, titled Ambush, starts today, January 23rd, and lasts till January 30th. Accompanying the announcement is a trailer that, while light on details about the event (it literally states to stay in cover to deal more damage), packs plenty of details on what bonuses players can expect to earn.
New Gear Sets include: Alpha Bridge, Firecrest, Hunter's Faith, and Tactician's Authority. New vanity outfits, weapon skins, and face masks are also available.
Here's the trailer: