Niicee refers to a set of six Class-B containers utilized by the Rebel Alliance. The container known as Niicee 5 held a prototype Missile Boat named Sealion. The Alliance intended to move it to a secret location for study, hoping to replicate its design. However, this plan was foiled when Imperial forces under the command of Darth Vader initiated a recovery mission targeting the container with the Sealion, while the remaining containers, loaded with warheads, were destroyed.