Operation Dust Line

Siege's second expansion: the Navy SEALs, Blackbeard, Valkyrie and Border.

Operation Dust Line was the second expansion for Tom Clancy's Rainbow Six Siege, released free on 10 May 2016 after being announced on 22 April. It brought the U.S. Navy SEALs into the game as a new counter-terrorist unit with two operators, Blackbeard and Valkyrie.

Year Pass owners could play the two new operators straight away; everyone else got access to them a week later.

Quick Facts

Released: 10 May 2016
Announced: 22 April 2016
Operators: Blackbeard, Valkyrie
Unit: U.S. Navy SEALs
Followed by: Operation Skull Rain (2 August 2016)

Facts from the source article.

Background

Alongside the operators, Dust Line added the map Border and five weapons: the Mk17 CQB, the SR-25, the MPX, the SPAS-12 and the D-50 pistol. It also introduced headgear and charms as cosmetics, a showcase of the winning team at the end of a match, and the option to change loadouts between rounds.

The season ran until 2 August 2016, when Operation Skull Rain replaced it.