S.H.I.E.L.D. is an espionage and law-enforcement agency in the Marvel Universe. Created by Nick Fury after the end of World Was II. S.H.I.E.L.D. is known to combat technology advanced threats on world security. S.H.I.E.L.D. has throughout the years, remained on the front lines fighting terrorism and extraterrestrial menaces as an international intelligence agency. These plugs are of the logo symbol of S.H.I.E.L.D.