ViviSat Opens ATK RPO Facility to Clients

                  ViviSat Opens ATK RPO Facility to Clients

ATK Closed Loop Software Test Milestone Accomplished

Satellite Servicing Leader to demonstrate new facility during Satellite 2013

PR Newswire

BELTSVILLE, Md., March 14, 2013

BELTSVILLE, Md., March 14, 2013 /PRNewswire/ --ViviSat, the leading provider
of in-orbit servicing, has opened the ATK Robotic Rendezvous and Proximity
(RPO) testing facility to ViviSat clients at the headquarters of ATK's Space
Systems Division in Beltsville, Md. Tours of the facility for ViviSat clients
will begin during the upcoming Satellite 2013 Conference on March 18-21, 2013
in Washington, D.C.

The recently opened RPO facility allows ViviSat and one of its parent
companies, ATK (NYSE: ATK), to demonstrate and verify critical enabling
technologies for today's more complicated space missions. The lab uses
state-of-the-art robotic and air-bearing testbeds to simulate satellite motion
and facilitate hardware and software development and validation.

The development of technology for controlled approach and docking between
spacecraft supports ViviSat's Mission Extension Vehicle (MEV). The MEV,
manufactured by ATK, is designed to dock with the orbiting satellite and serve
as the propulsion and attitude control systems. This enables mission extension
for satellites which have run out of maneuvering fuel yet still have healthy
payload and power systems.

ATK's Space Systems Division completed two prototype docking mechanisms that
will reinforce the MEV's ongoing development. These prototypes demonstrate
servicing capabilities to potential clients and will be used to validate
contact dynamics and docking performance in the ATK RPO lab. ATK also recently
completed initial testing of closed loop proximity operations, demonstrating
the ability to track a simulated host satellite using a prototype visual
sensor suite.

"The ATK Robotic RPO Lab demonstrates a substantial investment in retiring
risk for ViviSat and its clients. The capability currently demonstrated is the
first step in our plans to perform full six degree of freedom docking
validation and qualification," said Tom Wilson, vice president and general
manager of ATK Space Systems Division.

"We demonstrated this closed loop capability to several clients and the
response has been overwhelmingly positive. They see these developments as
further validation that ViviSat is making key qualification milestones and
demonstrating real capabilities to provide in-orbit servicing," said Bryan
McGuirk, Chief Operating Officer of ViviSat.

Satellite 2013 attendees can learn more about ViviSat at the ATK exhibit booth
(#9039) inside the Walter E. Washington Convention Center. Members of the
ViviSat team will be available to share information, introduce an animated
video of ViviSat's Mission Extension Vehicle (MEV) and lead tours for the RPO
facility in nearby Beltsville, Md.

Further information about ViviSat can be found at the company's website:

U.S. Space LLC is a U.S.-owned provider of dedicated, commercial space
solutions. The company was established in January 2009 as a U.S.-owned
provider of satellite solutions with a unique model combining the best
commercial and government practices. The company, which is run by a small
group of highly respected former military and corporate leaders, now offers a
variety of dedicated space solutions to serve the nation's interests. More
information on the company is available at

ATK is an aerospace, defense, and commercial products company with operations
in 21 states, Puerto Rico, and internationally. News and information can be
found on the Internet at

Certain information discussed in this press release constitutes
forward-looking statements as defined in the Private Securities Litigation
Reform Act of 1995. Although ATK and U.S. Space believe that the expectations
reflected in such forward-looking statements are based on reasonable
assumptions, they can give no assurance that their expectations will be
achieved. Forward-looking information is subject to certain risks, trends, and
uncertainties that could cause actual results to differ materially from those
projected. Among these factors are: technical challenges associated with the
development and performance of advanced space technologies and services, and
assumptions regarding the development of commercial and governmental markets
for in-orbit mission extension and operations protection. Neither ATK nor U.S.
Space undertakes any obligation to update any forward-looking statements. For
further information on factors that could impact ATK, and statements contained
herein, please refer to ATK's most recent Annual Report on Form 10-K and any
subsequent quarterly reports on Form 10-Q and current reports on Form 8-K
filed with the U.S. Securities and Exchange Commission.

ViviSat – Bryan McGuirk   ATK – George Torres
609-271-0503              801-699-2637

SOURCE ViviSat; U.S. Space; ATK

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