Yammosk Action refers to the efforts made by the Wild Knights to seize a yammosk so that Danni Quee could analyze it in 27 ABY throughout the Yuuzhan Vong War. The Assault on Arkania and the Battle of Talfaglio were among their endeavors. Ultimately, Luke Skywalker successfully captured one during the Battle of the Black Bantha using a boarding harpoon. This capture led to the creation of the gravitic amplitude modulator.