From The Stargate Omnipedia


Field Remote Expeditionary Device. The F.R.E.D. is a six or eight-wheeled, remote controlled carrier for tools, supplies and weapons. Often, it follows after a M.A.L.P. and immediately before SG units, providing a place for cover if necessary.


Forever In a Day - Jack O'Neill uses a machine gun mounted on a 6-wheel F.R.E.D.
Hide and Seek - The Atlantis crew attempt to lure the shadow creature through the Stargate with a naquadah generator on a 6 wheeled F.R.E.D., but the creature drains the batteries.