from SC 13D/A
1 page
<page> Exhibit 1 Joint Filing Agreement the Undersigned Hereby Agree That the Statement on Schedule 13d Filed Herewith, Relating to the Common Stock, $0.01 Par Value, of Motient Corporation, Is Being Filed Jointly With the Securities and Exchange Commission Pursuant to Rule 13d-1(k)(1) Under the Securities Exchange Act of 1934, as Amended, on Behalf of Each Such Person. in Witness Whereof, the Undersigned Have Executed This Joint Filing Agreement. Date: October 20, 2003 Highland Capital Management, L.P., a Delaware Limited Partnership By: Strand Advisors, Inc., a Maryland Corporation, Its General Partner By: /S/ James Dondero Name: James Dondero Title: President Strand Advisors, Inc., a Maryland Corporation By: /S/ James Dondero Name: James Dondero Title: President Prospect Street High Income Portfolio, Inc., a Maryland Corporation By: /S/ James Dondero Name: James Dondero Title: President Prospect Street Income Shares Inc., a Maryland Corporation By: /S/ James Dondero Name: James Dondero Title: President <page> Highland Legacy Limited, a Cayman Islands Limited Partnership By: Highland Capital Management, L.P., a Delaware Limited Partnership and Its Collateral Manager By: Strand Advisors, Inc., a Delaware Corporation, Highland Capital Management, L.P.'S General Partner By: /S/ James Dondero Name: James Dondero Title: President Highland Crusader Offshore Partners, L.P., a Bermuda Limited Partnership By: Highland Capital Management, L.P., a Delaware Limited Partnership and Its General Partner By: Strand Advisors, Inc., a Delaware Corporation, Highland Capital Management, L.P.'S General Partner By: /S/ James Dondero Name: James Dondero Title: President Pamco Cayman, Limited, a Cayman Islands Limited Partnership By: Highland Capital Management, L.P., a Delaware Limited Partnership and Its Collateral Manager By: Strand Advisors, Inc., a Delaware Corporation, Highland Capital Management, L.P.'S General Partner By: /S/ James Dondero Name: James Dondero Title: President
