Project P.E.G.A.S.U.S.

Projet-pegasus.jpg
Project P.E.G.A.S.U.S. is a subterranean research facility. The facility is ran by S.H.I.E.L.D., and director, Nick Fury.

Iron Man 2
Project P.E.G.A.S.U.S. is alluded to when Tony Stark opens a wooden crate marked "Project Pegasus" in preparation to synthesize a new element.

The Avengers
The subterranean Project P.E.G.A.S.U.S. facility is where the Tesseract is being studied, the research is lead by Dr. Erik Selvig. Along with Selvig there are many profesors and guards including S.H.I.E.L.D. agents, Hawkeye. However it proceeds to collapse when a portal opened by the Cube implodes by Loki .As the downfall of the facility falls, many guards are killed by Loki and Selvig and Hawkeye are taken under mind-control.

Trivia

 * In the comics, P.E.G.A.S.U.S. stands for Potential Energy Group/Alternate Sources/United States.