Inmarsat Government, the U.S. government services arm of satellite operator Inmarsat, on Aug. 22 named industry veteran Susan Miller as its new president and chief executive.

She replaces David Helfgott, who served just over a year in that job.

Miller has held a variety of senior positions in the satellite industry, including a stint as president of Intelsat General Corp., the government services division of the world’s biggest satellite operator. She arrives at Inmarsat as it prepares to begin deployment of its Ka-band Global Xpress satellite constellation, which has a strong focus on U.S. military and other government business.

In a press release announcing Miller’s appointment, Inmarsat characterized itself as a “cleared organization operating under a Proxy Agreement with the U.S. Department of Defense” as a provider of critical, secure communications solutions. 

“With Global Xpress service on the horizon, this is an exciting time to join an organization that has served government needs for over 33 years,” Miller said in a prepared statement. 

Inmarsat Government, a wholly owned subsidiary of mobile services provider Inmarsat, announced the appointment of Helfgott as its president and chief executive in May 2012. 

“David Helfgott decided to leave Inmarsat to pursue opportunities outside of the company,” Leslie Blaker-Glass, Inmarsat Government’s senior vice president of strategy development, told SpaceNews in a written response to query.