Perimeter field charge
A perimeter field charge was a type of force field emitted on sections of the  starships.

In 2367, Lieutenant Commander Data took control of the  from the bridge and directed it to the planet Terlina III. Data instructed the Enterprises computer to initiate a perimeter field charge between sections 9-K through 12-T. During this, Commander Riker, Lieutenant Worf and security officer  attempted to enter the Enterprises bridge by opening panel J14-Baker from directly behind Science II and regain control of the starship. However, they were blocked from doing so by the perimeter field charge. ()
Energy