The Avengers
Joint Dark Energy Mission (lab)
S.H.I.E.L.D is performing experiments on the Tesseract when Loki arrives through a portal and the facility is destroyed.
Source: Cleveland.com
Part of Plum Brook Station
Official Site
The Space Power Facility is the world's largest environment simulation chamber used to test space equipment. Features a massive vacuum chamber which can simulate the environment equipment will experience in low-earth-orbit. The main chamber is 130 feet in diameter and 150 feet high.
S.H.I.E.L.D is performing experiments on the Tesseract when Loki arrives through a portal and the facility is destroyed.
Source: Cleveland.com