A fissure was encountered by Lieutenant Worf while returning to the USS Enterprise-D from a bat'leth competition on Forcas III. When Worf's shuttlecraft Curie came into contact with the fissure, its warp engines caused a small break in the barriers between quantum realities. Worf was thrown into a state of quantum flux, shifting him into other realities. The quantum flux in Worf's cellular RNA was intensified by the subspace field pulse of Commander La Forge's VISOR, pushing Worf into a new reality every time he was in close proximity to La Forge. The shift caused him a momentary feeling of dizziness, similar to the side effects of a concussion.