The High Bay is a 60 foot high (4 story) open area with approximately 2000 square feet of floor space and two cranes rated at 2 and 10 tons. It provides balcony access on 2 stories and has a unique control/top-access room on the fourth floor, which provides access from the top (e.g., for testing of boom and antenna instruments). With large entry access, large open volume, and heavy lift cranes, the High Bay is an essential facility for assembly of large scientific instruments or payloads for high altitude balloons, rockets, and satellites.