Document:

EXHIBIT 10.2

                                    AGREEMENT

         THIS AGREEMENT dated as of ________ __, 2002 is made by and between
Motient Corporation, a Delaware corporation (the "Company"), and _____________
(the "Executive").

         WHEREAS, the Company has maintained Change of Control separation
agreements with certain executives in order to reinforce and encourage the
continued attention and dedication of members of the Company's management,
including the Executive, to their assigned duties without distraction in the
face of potentially disturbing circumstances arising from the possibility of a
Change in Control; and

         WHEREAS, the Company has undertaken an Amended Joint Plan of
Reorganization, dated February 27, 2002, approved by the United States
Bankruptcy Court for the Eastern District of Virginia (the "Reorganization
Plan"), and pursuant to which the court and the Company recognize that it is
essential to the Company's best interests and to the best interests of its
stockholders to foster the continuous employment of certain key management
personnel; and

         WHEREAS, the Reorganization Plan has authorized the Company to enter
into new Change of Control separation agreements with the ten (10) of the senior
officers in the form of this Agreement, and the Executive and the Company have
agreed that this Agreement shall supersede and entirely replace any prior
agreement between the Company and the Executive regarding a Change in Control
(the "Prior Agreement").

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants herein contained, the Company and the Executive hereby agree as
follows:

         1. Waiver; Defined Terms. The Executive hereby waives any rights,
including any right to payment, under the Prior Agreement, and agrees that this
Agreement supersedes and replaces the Prior Agreement in its entirety. For
purposes of this Agreement, definitions of certain capitalized terms used in
this Agreement are provided in Section 9 and elsewhere in this Agreement.

         2. Term of Agreement. This Agreement shall become effective on the date
hereof and shall remain in effect indefinitely thereafter; provided, however,
that (a) except as provided in clause (b) of this Section 2, either the Company
or the Executive may terminate this Agreement by giving the other party at least
two (2) years advance written notice of such termination, and (b) if a Potential
Change in Control or a Change in Control shall have occurred during the term of
this Agreement, this Agreement may not be terminated until all obligations of
either party hereto have been performed in full, the Coverage Period has expired
without the occurrence of a Triggering Event, or in the case of a Potential
Change in Control, no Change in Control occurs for at least two years following
such Potential Change in Control. Notwithstanding the foregoing, this Agreement
shall terminate upon the Executive's attaining age sixty-five (65), the
Executive's Disability or death, except as to obligations of the Company
hereunder arising from a Change in Control and a Triggering Event that occurred
prior to his having reached such age or prior to the occurrence of his
Disability or death.

         3. Agreement of the Company. In order to induce the Executive to remain
in the employ of the Company, the Company agrees, under the terms and conditions
set forth herein, that, upon the occurrence of both a Change in Control and a
Triggering Event during the term of this Agreement, the Company shall provide to
the Executive the benefits described in Sections 3.1 through 3.3 below (the
"Severance Benefits"), unless prior to the date of any Triggering Event, the
Executive's employment with the Company has been terminated for Cause or due to
the Executive's Disability or death.

                  3.1 Lump-Sum Severance Payment. In lieu of any further salary
payments to the Executive for periods subsequent to the Date of Termination, the
Company shall pay to the Executive a lump sum severance payment, in cash,
without discount, equal to the Executive's Annual Base Salary.

                  3.2 Vesting of Options. The vesting of all options to purchase
securities of the Company granted to the Executive pursuant to the Company's
2002 Stock Incentive Plan or any other Company plan that are then held by the
Executive shall be accelerated to the Date of Termination, and shall continue to
be exercisable for a two-year period after such acceleration; any provision
contained in the agreement(s) under which such options were granted that is
inconsistent with such acceleration is hereby modified to the extent necessary
to provide for such acceleration; such acceleration shall not apply to any
option that by its terms would vest prior to the date provided for in this
Section 3.2.

                  3.3 Continued Benefits. For a twelve (12) month period (or, if
less, the number of months from the Date of Termination until the date the
Executive will reach age sixty-five (65)) after the Date of Termination (the
"Benefits Period"), the Company shall provide the Executive with group term life
insurance, health insurance, accident and long-term disability insurance
benefits (collectively, "Welfare Benefits") substantially similar in all
respects to those that the Executive was receiving immediately prior to the Date
of Termination (without giving effect to any reduction in such benefits
subsequent to a Potential Change in Control or a Change in Control). During the
Benefits Period, the Executive shall be entitled to elect to change his level of
coverage and/or his choice of coverage options (such as Executive only or family
medical coverage) with respect to the Welfare Benefits to be provided by the
Company to the Executive to the same extent that actively employed senior
executives of the Company are permitted to make such changes; provided, however,
that in the event of any such changes the Executive shall pay the amount of any
cost increase that would actually be paid by an actively employed senior
executive of the Company by reason of making the same changes in his level of
coverage or coverage options.

                  3.4 Terminations in Anticipation of Change in Control. The
Executive shall be entitled to the Severance Benefits under Section 3 hereof if
the Executive's employment is terminated by the Company without Cause prior to a
Change in Control and such termination of employment (a) was at the request of a
third party which has taken steps reasonably calculated to effect a Change in
Control or (b) otherwise arose in anticipation of a Change in Control. The
Executive shall be entitled to the Severance Benefits under Section 3 hereof if
the Executive terminates his employment prior to a Change in Control if at the
time of such termination a circumstance or event which would constitute Good
Reason after a Change in Control has occurred (a) at the request of a third
party who has taken steps reasonably calculated to effect a Change in Control or
(b) in anticipation of a Change in Control.

         4. Certain Limitations on Payments and Benefits. The Severance Benefits
payable under Section 3.1 hereof shall be reduced by the amount of any other
payment or the value of any benefit received or to be received by the Executive
that, in the opinion of tax counsel ("Tax Counsel") selected by the Executive
and acceptable to the Company's independent auditors, is likely to constitute a
"parachute payment" under section 280G(b)(2) of the Code (whether pursuant to
the terms of this Agreement or any other plan, agreement or arrangement with the
Company or any subsidiary, any person whose actions result in a Change in
Control, or any person affiliated with the Company or such person) unless (A)
the Executive shall have effectively waived his receipt or enjoyment of such
payment or benefit prior to the date of payment of such Severance Benefits, (B)
or in the opinion of Tax Counsel, the Severance Benefits (in their full amount
or as partially reduced under this Section 4, as the case may be) plus all other
payments or benefits that constitute "parachute payments" within the meaning of
section 280(b)(2) of the Code are likely to be reasonable compensation for
services actually rendered, within the meaning of section 280G(b)(4) of the Code
or are otherwise not likely to be subject to disallowance as a deduction by
reason of section 280G of the Code. The value of any noncash benefit or any
deferred payment or benefit shall be determined by the Company's independent
auditors in accordance with the principles of section 280G(d)(3) and (4) of the
Code.

         5. Timing of Payments. The payment provided for in Section 3.1 hereof
shall be made on the Date of Termination, provided, however, that if the amounts
of such payment cannot be finally determined on or before such day, the Company
shall pay to the Executive on such day an estimate, as determined in good faith
by the Company, of the minimum amount of such payment and shall pay the
remainder of such payment (together with interest at the rate provided in
Section 1274(b)(2)(B) of the Code from the Date of Termination to the payment of
such remainder) as soon as the amount thereof can be determined but in no event
later than the thirtieth (30th) day after the Date of Termination. In the event
that the amount of the estimated payment exceeds the amount subsequently
determined to have been due, such excess shall constitute a loan by the Company
to the Executive, payable on the fifth (5th) business day after demand by the
Company (together with interest at the rate provided in Section 1274(b)(2)(B) of
the Code from the Date of Termination to the repayment of such excess).

         6. Reimbursement of Legal Costs. The Company shall pay to the Executive
all reasonable legal fees and expenses incurred by the Executive as a result of
a termination that entitles the Executive to any payments under this Agreement
including all such fees and expenses, if any, incurred in contesting or
disputing any Notice of Termination under Section 7.2 hereof or in seeking to
obtain or enforce any right or benefit provided by this Agreement or in
connection with any tax audit or proceeding to the extent attributable to the
application of Section 4999 of the Code to any payment or benefit provided
hereunder. Such payments shall be made within five (5) business days after
delivery of the Executive's respective written requests for payment accompanied
with such evidence of fees and expenses incurred as the Company reasonably may
require.

         7.  Termination Procedures.
             ----------------------

                  7.1 Notice of Termination. After a Potential Change in Control
or a Change in Control, any termination of the Executive's employment (other
than by reason of death) must be preceded by a written Notice of Termination
from the terminating party to the other party hereto in accordance with Section
8.5 hereof. For purposes of this Agreement, a "Notice of Termination" shall mean
a notice which shall (i) specify the date of termination (the "Date of
Termination") which shall not be more than sixty (60) days from the date such
Notice of Termination is given, (ii) indicate the notifying party's opinion
regarding the specific provisions of this Agreement that will apply upon such
termination and (iii) set forth in reasonable detail the facts and circumstances
claimed to provide a basis for the application of the provisions indicated.
Termination of the Executive's employment shall occur on the specified Date of
Termination even if there is a dispute between the parties pursuant to Section
7.2 hereof relating to the provisions of this Agreement applicable to such
termination.

                  7.2 Dispute Concerning Applicable Termination Provisions. If
within thirty (30) days of receiving the Notice of Termination the party
receiving such notice notifies the other party that a dispute exists concerning
the provisions of this Agreement that apply to such termination, the dispute
shall be resolved either by mutual written agreement of the parties or by
expedited commercial arbitration under the rules of the American Arbitration
Association, pursuant to the procedures set forth in Section 8.14 herein. The
parties shall pursue the resolution of such dispute with reasonable diligence.
Within five (5) days of such a resolution, any party owing any payments pursuant
to the provisions of this Agreement shall make all such payments together with
interest accrued thereon at the rate provided in Section 1274(b)(2)(B) of the
Code.

         8.  Miscellaneous.
             -------------

                  8.1 No Mitigation. The Company agrees that, if the Executive's
employment by the Company is terminated in a manner that results in the payment
of Severance Benefits hereunder, the Executive shall not be required to seek
other employment or to attempt in any way to reduce any amounts payable to the
Executive by the Company pursuant to this Agreement. Further, the amount of any
payment or benefit provided for under this Agreement shall not be reduced by any
compensation earned by the Executive as the result of employment by another
employer, by retirement benefits, by offset against any amount claimed to be
owed by the Executive to the Company, or otherwise.

                  8.2 Successors. In addition to any obligations imposed by law
upon any successor to the Company, the Company shall be obligated to require any
successor (whether direct or indirect, by purchase, merger, consolidation,
operation of law, or otherwise) to all or substantially all of the business
and/or assets of the Company to expressly assume and agree to perform this
Agreement in the same manner and to the same extent that the Company would be
required to perform it if no such succession had taken place; in the event of
such a succession, references to the "Company" herein shall thereafter be deemed
to include such successor. Failure of the Company to obtain such assumption and
agreement prior to the effectiveness of any such succession shall be a breach of
this Agreement and shall entitle the Executive to terminate his employment and
thereafter to receive Severance Benefits, except that, for purposes of
implementing the foregoing, the date on which any such succession becomes
effective shall be deemed the Date of Termination.

                  8.3 Incompetency. Any benefit payable to or for the benefit of
the Executive, if legally incompetent, or incapable of giving a receipt
therefor, shall be deemed paid when paid to the Executive's guardian or to the
party providing or reasonably appearing to provide for the care of such person,
and such payment shall fully discharge the Company.

                  8.4 Death. This Agreement shall inure to the benefit of and be
enforceable by the Executive's personal or legal representatives, executors,
administrators, successors, heirs, distributees, devisees and legatees. If the
Executive shall die while any amount would still be payable to the Executive
hereunder (other than amounts which, by their terms, terminate upon the death of
the Executive) if the Executive had continued to live, all such amounts, unless
otherwise provided herein, shall be paid in accordance with the terms of this
Agreement to the executors, personal representatives or administrators of the
Executive's estate.

                  8.5 Notices. For the purpose of this Agreement, notices and
all other communications provided for in the Agreement shall be in writing and
shall be deemed to have been duly given when delivered or mailed by United
States registered mail, return receipt requested, postage prepaid, addressed to
the respective addresses set forth below, or to such other address as either
party may have furnished to the other in writing in accordance herewith, except
that notice of change of address shall be effective only upon actual receipt:

                         To the Company:

                         Motient Corporation
                         10802 Parkridge Boulevard
                         Reston, Virginia  20191-5416

                         Attention:

                         To the Executive:

                         =================
                         -----------------

                  8.6 Modification, Waiver. No provision of this Agreement may
be modified, waived or discharged unless such waiver, modification or discharge
is agreed to in writing and signed by the Executive and such officer as may be
specifically designated by the Board or its delegee. No waiver by either party
hereto at any time of any breach by the other party hereto of, or compliance
with, any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time.

                  8.7 Entire Agreement. No agreements or representations, oral
or otherwise, express or implied, with respect to the subject matter hereof have
been made by either party which are not expressly set forth in this Agreement.
Executive and Company agree that this Agreement shall supersede and entirely
replace any prior agreements between the Company and the Executive regarding
Change in Control.

                  8.8 Governing Law. The validity, interpretation, construction
and performance of this Agreement shall be governed by the laws of the
Commonwealth of Virginia without regard to principles of conflicts of laws
thereof.

                  8.9    Statutory  Changes.  All  references  to sections of
the Exchange Act or the Code shall be deemed also to refer to any successor
provisions to such sections.

                  8.10 Withholding. Any payments provided for hereunder shall be
paid net of any applicable withholding required under federal, state or local
law and any additional withholding to which the Executive has agreed.

                  8.11 Validity. The invalidity or unenforceability of any
provision of this Agreement shall not affect the validity or enforceability of
any other provision of this Agreement, which shall remain in full force and
effect.

                  8.12 No Right to Continued Employment. Nothing in this
Agreement shall be deemed to give any Executive the right to be retained in the
employ of the Company, or to interfere with the right of the Company to
discharge the Executive at any time and for any lawful reason, subject in all
cases to the terms of this Agreement.

                  8.13 No Assignment of Benefits. Except as otherwise provided
herein or by law, no right or interest of any Executive under the Agreement
shall be assignable or transferable, in whole or in part, either directly or by
operation of law or otherwise, including without limitation by execution, levy,
garnishment, attachment, pledge or in any manner; no attempted assignment or
transfer thereof shall be effective; and no right or interest of any Executive
under this Agreement shall be liable for, or subject to, any obligation or
liability of such Executive.

                  8.14 Arbitration Procedures. All disputes relating to this
Agreement, including without limitation any disputes under Section 7.2 hereof,
shall be submitted to expedited commercial arbitration under the rules of the
American Arbitration Association in Washington, D.C., with an arbiter who is
mutually acceptable to both parties being selected to preside over such
arbitration. The Federal Rules of Evidence shall apply, and the arbiter shall
establish the applicable rules of discovery. The prevailing party in any
arbitration shall be entitled to recover from the other party all fees and
expenses (including, without limitation, reasonable attorney's fees and
disbursements) incurred in connection with such arbitration. The arbiter shall
determine the scope of arbitrability. The only judicial relief shall be (a)
interim equitable relief and (b) relief in aid of or to enforce arbitration.

                  8.15 Headings. The headings and captions herein are provided
for reference and convenience only, shall not be considered part of this
Agreement, and shall not be employed in the construction of this Agreement.

         9.  Definitions.
             -----------

                  9.1 "Annual Base Salary" means the greater of (a) the
                      --------------------
Executive's highest annual base salary in effect during the one (1) year period
preceding a Change in Control and (b) the Executive's highest annual base salary
in effect during the one (1) year period preceding the Executive's Date of
Termination.

                  9.2    "Board" means the Board of Directors of the Company.
                         -------

                  9.3    "Cause" means:
                         -------

                         (a) the  willful and  continued  failure of the
Executive  to  substantially  perform the Executive's duties with the Company
(other than any such failure resulting from incapacity due to physical or mental
illness), after a written demand for substantial performance is delivered to the
Executive by the Board of the Company, which demand specifically identifies the
manner in which the Board believes that the Executive has not substantially
performed the Executive's duties;

                         (b) the willful  engaging by the Executive in illegal
conduct or gross  misconduct  which is materially and demonstrably injurious to
the Company, monetarily or otherwise;

                         (c) personal  dishonesty  or breach of  fiduciary  duty
to the Company that in either case results or was intended to result in personal
profit to the Executive at the expense of the Company; or

                         (d) willful  violation of any law,  rule or  regulation
(other than  traffic  violations, misdemeanors or similar offenses) or
cease-and-desist order, court order, judgment or supervisory agreement, which
violation is materially and demonstrably injurious to the Company.

                         For  purposes  of the  preceding  clauses,  no act or
failure  to act,  on the part of the Executive, shall be considered "willful"
unless it is done, or omitted to be done, by the Executive in bad faith and
without reasonable belief that the Executive's action or omission was in the
best interests of the Company. Any act, or failure to act, based upon prior
approval given by the Board or upon the instructions or with the approval of the
Executive's superior or based upon the advice of counsel for the Company, shall
be conclusively presumed to be done, or omitted to be done, by the Executive in
good faith and in the best interests of the Company. The cessation of employment
of the Executive shall not be deemed to be for Cause unless and until there
shall have been delivered to the Executive, as part of the Notice of
Termination, a copy of a resolution duly adopted by the affirmative vote of not
less than three-quarters (3/4) of the entire membership of the Board at a
meeting of the Board called and held for the purpose of considering such
termination (after reasonable notice is provided to the Executive and the
Executive is given an opportunity, together with counsel, to be heard before the
Board) finding that, in the good faith opinion of the Board, the Executive is
guilty of the conduct described in clause (a), (b), (c), or (d) above, and
specifying the particulars thereof in detail.

                  9.4    A "Change in Control" means the occurrence of any of
                         ---------------------
the following events:
                         (a) any  Person or  Persons  acting  together,
excluding  employee  benefit  plans of the Company, are or become the
"beneficial owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange Act
or any successor provisions thereto except that a Person that has the right to
acquire securities of the Company shall be deemed to be the "beneficial owner"
of such securities whether or not such right is immediately exercisable),
directly or indirectly, of securities of the Company representing greater than
fifty percent (50%) of the combined voting power of the Company's then
outstanding securities determined as if all rights of such Person or Persons to
acquire such securities had been exercised immediately prior to such
determination whether or not such rights are then immediately exercisable;

                         (b) the  Company's  shareholders  approve  (or, in the
event no approval of the  Company's shareholders is required, the Company
consummates) a merger, consolidation, share exchange, division or other
reorganization or transaction of the Company (a "Fundamental Transaction") with
any other corporation, other than a Fundamental Transaction which would result
in the voting securities of the Company outstanding immediately prior thereto
continuing to represent (either by remaining outstanding or by being converted
into voting securities of the surviving entity) at least eighty percent (80%) of
the combined voting power immediately after such Fundamental Transaction of (i)
the Company's outstanding securities, (ii) the surviving entity's outstanding
securities, or (iii) in the case of a division, the outstanding securities of
each entity resulting from the division, in each case determined as if all
rights to acquire such securities had been exercised immediately prior to such
determination, whether or not such rights are then immediately exercisable;

                         (c) the  shareholders of the Company approve a plan of
complete  liquidation or winding-up of the Company or an agreement for the sale
or  disposition  (in one  transaction or a series of  transactions)  of
all or substantially all of the assets of the Company and its subsidiaries
(taken as a whole);

                         (d) during any period of twenty-four  consecutive
months (commencing on or after the date hereof), individuals who at the
beginning of such period constituted the Board (including for this purpose any
new director whose election or nomination for election by the Company's
shareholders was approved by a vote of at least two-thirds (2/3) of the
directors then still in office who were directors at the beginning of such
period) cease for any reason to constitute at least a majority of the Board.

Notwithstanding any contrary provision of this Agreement, the term Change in
Control does not include any transaction undertaken pursuant to the
Reorganization Plan.

                  9.5 "Code" means the Internal Revenue Code of 1986, as amended
                      ------
from time to time.

                  9.6 "Company" means Motient Corporation and any successor to
                      ---------
its business and/or its assets which assumes or agrees to perform this Agreement
by operation of law or otherwise. If the Executive becomes employed by a direct
or indirect Subsidiary of Motient Corporation, the "Company" shall also be
deemed to refer to the Subsidiary thereof by which the Executive is employed. In
such case, references to payments, benefits, privileges or other rights to be
accorded by the "Company" shall be deemed to include such payments, benefits,
privileges or other rights to be provided by the Subsidiary by which the
Executive is employed or Motient Corporation, as the case may be, to correspond
to the corporate entity obligated to make payments or provide benefits,
privileges or other rights pursuant to employee benefit plans affected by the
provisions hereof, and in the absence of any such existing plans or provisions,
such reference shall be deemed to be to Motient Corporation.

                  9.7 "Coverage Period" means the period commencing on the date
                      -----------------
on which a Change in Control occurs and ending on the second anniversary date
thereof.

                  9.8    "Date of Termination" has the meaning assigned to such
                         ---------------------
 term in Section 7.1 hereof.

                  9.9   "Disability" means the Executive's inability to perform
                        ------------
substantially all of the Executive's duties with the Company by reason of
illness, physical or mental disability or other similar incapacity, as
determined by the Company in its sole discretion, which inability shall continue
for more than three consecutive months.

                  9.10 "Exchange Act" means the Securities Exchange Act of 1934,
                       --------------
as amended from time to time.

                  9.11   "Good Reason"  means:  the occurrence  during the
                         -------------
Coverage  Period of any of the following events:

                         (a) the  assignment  to the Executive of any duties
inconsistent  in any respect with the Executive's position (including status,
offices, titles and reporting requirements), authority, duties or
responsibilities immediately prior to either a Potential Change in Control that
precedes the Change in Control or a Change in Control or any other action by the
Company which results in a diminution in any respect in such position,
authority, duties or responsibilities, excluding for this purpose an isolated,
insubstantial and inadvertent action not taken in bad faith that is remedied by
the Company promptly after receipt of notice thereof given by the Executive;

                         (b) a  reduction  by the  Company in the  Executive's
annual  base salary as in effect on the date hereof or as the same may be
increased from time to time;

                         (c) the  Company's  requiring  the Executive to be
based at any office or location that is more than fifty (50) miles from the
Executive's office or location immediately prior to either a Potential Change
in Control that precedes a Change in Control or a Change in Control;

                         (d) the failure by the Company  (a) to continue in
effect any  compensation  plan in which the Executive participates immediately
prior to either a Potential Change in Control preceding a Change in Control or
a Change in Control that is material to the Executive's total compensation,
unless an equitable arrangement (embodied in an ongoing substitute or
alternative plan) has been made with respect to such plan, or (b) to continue
the Executive's participation therein (or in such substitute or alternative
plan) on a basis not materially less favorable, both in terms of the amount of
benefits provided and the level of the Executive's participation relative to
other participants, than existed immediately prior to a Potential Change in
Control that precedes a Change in Control or a Change in Control;

                         (e) the  failure by the  Company  to  continue  to
provide  the  Executive  with  benefits substantially similar to those enjoyed
by the Executive under any of the Company's pension, life insurance, medical,
health and accident, disability or other welfare plans in which the Executive
was participating immediately prior to a Potential Change in Control that
precedes a Change in Control or a Change in Control;

                         (f) the failure by the Company to pay to the  Executive
any  deferred  compensation  when due under any deferred compensation plan or
agreement applicable to the Executive; or

                         (g)   the failure by the Company to honor all the terms
and provisions of this Agreement.

                  9.12   "Notice  of  Termination"  shall have the  meaning
                         -------------------------
assigned  to such term in Section  7.1
hereof.

                  9.13 "Person" shall have the meaning given in Section 3(a)(9)
                       --------
of the Exchange Act and shall also include any syndicate or group deemed to be a
"person" under Section 13(d)(3) of the Exchange Act.

                  9.14   "Potential Change in Control" means the occurrence of
                         -----------------------------
any of the following:

                         (a) the Board approves a transaction  described in
subsection  (a), (b), (c) or (d) of the definition of Change in Control
contained in Section 9.4 hereof; or

                         (b) the  commencement  of a proxy contest in which any
Person seeks to replace or remove a majority of the members of the Board.

                  9.15   "Severance Benefits" has the meaning assigned to such
                         --------------------
term in Section 3 hereof.

                  9.16 "Triggering Event" means (i) the termination of the
                       ------------------
Executive's employment by the Company at any time during the Coverage Period,
other than a termination for Cause or a termination due to the Executive's
Disability or death or (ii) a termination of the Executive's employment by the
Executive at any time during the Coverage Period when Good Reason exists.

<PAGE>

                  IN WITNESS WHEREOF, the Company has caused this Agreement to
be executed by its officer, thereunto duly authorized, and the Executive has
executed this Agreement, all as of the day and year first above written.

                                            MOTIENT CORPORATION

                                            By:
                                               -------------------------------
                                               Name:
                                               Title:    Chief Executive Officer

                                            [Executive's name]
                                            ------------------EXHIBIT 10.3
                            SENIOR INDEBTEDNESS NOTE

$19,000,000.00                                                       May 1, 2002

                  FOR VALUE RECEIVED, MVH HOLDINGS INC., a Delaware corporation
("Borrower") hereby promises to pay to the order of, RARE MEDIUM GROUP, INC.
(together with any and all of its successors and assigns and/or any other holder
of this Note, "Lender"), without offset, in immediately available funds in
lawful money of the United States of America, the principal sum of NINETEEN
MILLION DOLLARS ($19,000,000.00), together with all interest payments added to
the principal balance of this Note pursuant to Section 1 hereof and all interest
and other amounts that are due and owing pursuant to the provisions of this
Note. This Note is being issued pursuant to the Debtors' Amended Joint Plan of
Reorganization Under Chapter 11 of the Bankruptcy Code (the "Plan") in the
jointly administered cases (the "Bankruptcy Cases") of Motient Corporation
("Motient"), Motient Holdings Inc., Motient Communications Inc. and Motient
Services Inc. ("Services"), pending in the United States Bankruptcy Court (the
"Bankruptcy Court") for the Eastern District of the Virginia, Alexandria
Division, Case Nos. 02-80125, 02-80126, 02-80128 and 02-80129-RGM and the
Settlement Agreement dated as of March 28, 2002 between the Lender and the
Debtors. The Plan was confirmed by order of the Bankruptcy Court entered on
April 26, 2002. Any capitalized terms used herein and not otherwise defined
herein shall have the meaning ascribed thereto in the Plan.

                  1. Payment Schedule and Maturity Date. Accrued unpaid interest
on the principal balance outstanding hereunder shall be due and payable
semi-annually, in arrears, commencing on the first day of November following the
Effective Date, and continuing on the 1st day of each succeeding November and
May thereafter until all principal and accrued interest owing on this Note shall
have been fully paid and satisfied. Borrower may, in its sole discretion, elect
to make any interest payment by adding the amount of such payment, as of the
date that such payment is due and owing, to the principal balance of this Note.
The entire amount of this Note then unpaid shall be due and payable in full on
the last day of the month which is the thirty-sixth month following the
Effective Date (such date, or any earlier date on which such amounts may become
due and payable pursuant to Section 7 hereof, the "Maturity Date").

                  2.       Interest Rate.
                           -------------

                           (a) The unpaid principal balance of this Note from
         day to day outstanding shall bear interest at a fixed rate of interest
         equal to nine percent (9.0%) per annum until paid.

                           (b) Interest on this Note shall be computed for the
         actual number of days which have elapsed, on the basis of a 365-day
         year.

                  3.       Prepayment.
                           ----------

                           (a) Borrower may prepay the principal balance of this
         Note and any other amounts that are due and owing on this Note, in full
         at any time or in part from time to time, without fee, premium or
         penalty.

                           (b) Upon receipt by Borrower and/or Ventures of any
         net cash proceeds from any assets of Borrower and/or Ventures, Borrower
         shall prepay amounts outstanding under this Note within five (5)
         business days of the receipt by Borrower and/or Ventures of such net
         cash proceeds, pro rata to the Lender and to the holders of any other
         Senior Indebtedness Notes outstanding at such time.

                           (c) Lender shall have the right, upon written notice
         to Borrower, to require Borrower to prepay all amounts outstanding
         under this Note within thirty (30) days of receiving written notice
         from Borrower of any of the following events taking place: (i) any
         person or group of persons (within the meaning of Section 13 or 14 of
         the Securities Exchange Act of 1934, as amended) other than a Permitted
         Holder (as specified in Exhibit "A" thereto) or an affiliate of a
         Permitted Holder (but only to the extent the Permitted Holder has
         majority ownership and control of such affiliate), acquires beneficial
         ownership (within the meaning of Rule 13d-3 promulgated by the
         Securities and Exchange Commission under said Act) of more than 50% of
         the outstanding capital stock of Motient, (ii) Motient ceases to own
         100% of the outstanding capital stock of Borrower, (iii) Borrower
         issues any equity securities, to any person or entity other than
         Motient, or (iv) Borrower issues any debt securities to any person or
         entity except for any other Senior Indebtedness Notes as permitted
         hereunder.

                           (d) Upon either: (i) receipt by Services or any other
         affiliate of Motient of proceeds from the sale or transfer of the note
         originally issued by Mobile Satellite Ventures LP ("MSV") to Services
         on November 26, 2001 in the principal amount of $15,000,000 (the "MSV
         Note"); or (ii) full or partial payment of the MSV Note to Services or
         any other affiliate of Motient, Borrower shall prepay, pro rata to the
         Lender and the holders of any other Senior Indebtedness Notes, in an
         amount equal to 25% of such proceeds or payment (as the case may be)
         within five (5) business days of receipt by Services or any other
         affiliate of Motient of such proceeds or payment.

                  4. Certain Provisions Regarding Payments. All payments made as
scheduled on this Note shall be applied, to the extent thereof, first to accrued
but unpaid interest, second to unpaid principal, and third to any other sums due
and unpaid to Lender pursuant to the terms hereof. All permitted prepayments on
this Note shall be applied, to the extent thereof, first to accrued but unpaid
interest on the amount prepaid, second to the principal, and third any other
sums due and unpaid to Lender pursuant to the terms hereof.

                  5. Representations  and Warranties.  Borrower  hereby
                     -------------------------------
represents and warrants to Lender as follows:

                           (a) Borrower is a corporation duly organized, validly
         existing and in good standing under the laws of the State of Delaware
         and has the power and authority to own its property and to carry on its
         business in each jurisdiction in which Borrower does business.

                           (b) Borrower has full power and authority to execute
         and deliver this Note and to incur and perform the obligations provided
         for herein, all of which have been duly authorized by all proper and
         necessary action of the appropriate governing body of Borrower and the
         Bankruptcy Court. No consent or approval of any public authority or
         other third party is required as a condition to the validity of this
         Note.

                           (c) This Note constitutes a valid and legally binding
         obligation of Borrower, enforceable in accordance with its terms,
         except as enforcement hereof may be limited by bankruptcy or other
         similar laws affecting enforcement of creditors' rights generally and
         by general principles of equity (whether in a court of law or equity).

                           (d) Borrower is the owner of all of the outstanding
         capital stock (the "Venture Stock") of Ventures, free and clear of
         liens and encumbrances of any manner whatsoever. Other than the Venture
         Stock, Ventures has no other securities (whether debt or equity) issued
         or outstanding.

                           (e) Neither Borrower nor Ventures has any liabilities
         of any kind or nature, whatsoever, other than this Note and any other
         outstanding Senior Indebtedness Notes, except for (i) such obligations
         and liabilities as are provided for or contemplated by the MSV
         Agreements (as hereinafter defined), and (ii) other liabilities not
         exceeding $10,000 in the aggregate.

                           (f) Ventures is the owner of 8,000,000 common units
         of limited partnership interest in MSV, which constitute approximately
         twenty-five point five percent (25.5%) of the outstanding limited
         partnership interests in MSV on a fully diluted basis (assuming
         conversion of all convertible notes of MSV currently outstanding and
         assuming such additional dilution as is currently contemplated by the
         agreements, listed on Exhibit "B" to this Note (the "MSV Agreements"),
         pertaining to MSV) ("Ventures' Interest in MSV"), free and clear of
         liens and encumbrances of any manner whatsoever, except for such
         encumbrances as are provided for or contemplated by the MSV Agreements.

                           (g) The only property and assets of Borrower is the
         Venture Stock, and the only property and assets of Ventures is (i)
         Ventures' Interest in MSV, (ii) the shares of common stock of Mobile
         Satellite Ventures GP Inc. ("MSV GP") owned by Ventures constituting
         approximately twenty-five point five percent (25.5%) of the outstanding
         capital stock of MSV GP on a fully diluted basis (assuming such
         dilution as is currently contemplated by the MSV Agreements), and (iii)
         the $2.5 million convertible note issued to Ventures by MSV
         (collectively, the "Assets of Ventures").

                           (h) The  aggregate  principal  amount of all  Senior
         Indebtedness  Notes  does not exceed $21 million.

                           (i) All representations and warranties made under
         this Note shall be deemed to be made at and as of the date hereof.

                  6.  Covenants.  Until  all  principal,  accrued interest and
                      ---------
other  amounts  outstanding hereunder are paid in full, Borrower:

                           (a) Will maintain its existence, good standing and
         qualification to do business, where required and comply with all laws,
         regulations and governmental requirements.

                           (b) Will not incur, and will cause Ventures not to
         incur, any obligations or liabilities of any kind or nature whatsoever
         except (i) as to Borrower, the obligations under this Note and any
         other Senior Indebtedness Notes issued pursuant to the Plan, so long as
         the aggregate principal amount of all Senior Indebtedness Notes does
         not exceed $21 million, (ii) as to Ventures, existing obligations
         under, or obligations contemplated by, the MSV Agreements (iii) as to
         Borrower or Ventures, (x) obligations incurred in the ordinary course
         of business; (y) consistent with prior practice; and (z) in an
         aggregate amount not to exceed $10,000.

                           (c) Will not grant, permit or suffer to exist any
         liens or encumbrances on any of the property and assets of Borrower or
         Ventures, except, in the case of Ventures, encumbrances provided for,
         or contemplated by, the MSV Agreements.

                           (d) Will maintain the ownership of the Venture Stock,
         will cause Ventures to not issue any additional stock or interests of
         any manner whatsoever, and will cause Ventures to agree to maintain
         ownership of, and not sell, transfer, pledge, grant a security interest
         in or assign (collectively, "Transfer"), the Assets of Ventures,
         subject to any dilution as may occur pursuant to the terms of MSV
         Agreements, without receiving the written consent of Lender, unless (i)
         Lender consents in writing prior to such Transfer or (ii) upon the
         consummation of such Transfer all principal, accrued interest and other
         amounts outstanding under the Note will be paid in full.

                           (e) Except as contemplated hereby or by the Plan,
         will not enter into any transactions with any Affiliates (as defined in
         Section 101(2) of the Bankruptcy Code) and will cause Ventures, except
         as may be provided for or contemplated by the MSV Agreements, to enter
         into no transactions with any Affiliates.

                  7.       Events of Default.
                           -----------------

                           (a) It shall be an event of default ("Event of
         Default") under this Note if (i) any principal, accrued interest or
         other amount of money due hereunder is not paid in full when due,
         regardless of how such amount may have become due; (ii) any covenant,
         agreement or condition contained herein is not fully and timely
         performed, observed or kept except as to the covenant contained in
         section 6(b)(iii) only, Borrower shall have five (5) business days from
         the day on which it becomes aware of any violation to cure; (iii) any
         representations and warranties set forth in Section 5 above shall be
         untrue in any material respect as of the date hereof; (iv) Borrower
         owns less than all of the issued and outstanding capital stock of
         Ventures; (v) the filing of a petition or the institution of
         proceedings of, by, or against Motient pursuant to the Bankruptcy
         Reform Act of 1978, as amended, (excluding the Bankruptcy Cases) or any
         successor statute or pursuant to any state bankruptcy, insolvency,
         moratoria, reorganization, or similar laws which is not dismissed
         within ninety (90) days; or (vi) Motient's making a general assignment
         for the benefit of its creditors, or the entering by Motient into any
         compromise or arrangement with its creditors generally. Upon the
         occurrence of an Event of Default, Lender may immediately by written
         Notice to Borrower (i) declare the unpaid principal balance and all
         accrued but unpaid interest on this Note, and all other amounts due
         hereunder, at once due and payable (and upon such declaration, the same
         shall be at once due and payable), and (ii) exercise any of its other
         rights, powers and remedies under this Note, or at law or in equity.
         Borrower shall give notice to Lender promptly upon becoming aware of
         any Event of Default.

                           (b) All of the rights, remedies, powers and
         privileges (together, "Rights") of Lender provided for in this Note are
         cumulative of each other and of any and all other Rights at law or in
         equity. The resort to any Right shall not prevent the concurrent or
         subsequent employment of any other appropriate Right. No single or
         partial exercise of any Right shall exhaust it, or preclude any other
         or further exercise thereof, and every Right may be exercised at any
         time and from time to time. No failure by Lender to exercise, nor delay
         in exercising any Right, including but not limited to the right to
         accelerate the maturity of this Note, shall be construed as a waiver of
         any Event of Default or as a waiver of any Right.

                           (c) If any holder of this Note retains an attorney in
         connection with any Event of Default or at maturity or to collect,
         enforce or defend this Note in any lawsuit or in any reorganization,
         bankruptcy, arbitration or other proceeding, or if Borrower sues any
         holder in connection with this Note and does not prevail, then Borrower
         agrees to pay to each such holder, in addition to principal, interest
         and any other sums owing to Lender hereunder, all costs and expenses
         incurred by such holder in trying to collect this Note or in any such
         suit or proceeding, including, without limitation, reasonable
         attorneys' fees and expenses, investigation costs and all court costs,
         whether or not suit is filed hereon, whether before or after the
         Maturity Date, or whether in connection with bankruptcy, insolvency or
         appeal, or whether collection is made against Borrower or any guarantor
         or endorser or any other person primarily or secondarily liable
         hereunder.

                  8. General Provisions. Time is of the essence with respect to
Borrower's obligations under this Note. Borrower hereby waives demand,
presentment for payment, notice of dishonor and of nonpayment, protest, notice
of protest, notice of intent to accelerate, notice of acceleration and all other
notices (except any notices which are specifically required by this Note),
filing of suit and diligence in collecting this Note or enforcing any provision
of this Note. A determination that any provision of this Note is unenforceable
or invalid shall not affect the enforceability or validity of any other
provision, and the determination that the application of any provision of this
Note to any person or circumstance is illegal or unenforceable shall not affect
the enforceability or validity of such provision as it may apply to other
persons or circumstances. THIS NOTE, AND ITS VALIDITY, ENFORCEMENT AND
INTERPRETATION, SHALL BE GOVERNED BY NEW YORK LAW (WITHOUT REGARD TO ANY
CONFLICT OF LAWS PRINCIPLES) AND APPLICABLE UNITED STATES FEDERAL LAW.

                  9. Notices; Time. All notices, requests, consents, approvals
or demands (collectively, "Notice") required or permitted by this Note to be
given by any party to any other party hereunder shall, unless specified
otherwise, be in writing (including facsimile (fax) transmission) and shall be
given to such party at its address or fax number set forth below, or such other
address or fax number as such party may hereafter specify for the purpose by
Notice to the other party.

                           If to Lender:

                           Robert C. Lewis, Esq.
                           Rare Medium Group, Inc.
                           44 W. 18th Street
                           6th Floor
                           New York, NY  10011
                           Telecopier No.:  (646) 638-1382

                           If to Borrower:

                           MVH Holdings Inc.
                           c/o Motient Corporation
                           10802 Parkridge Boulevard
                           Reston, VA 20191
                           Attn: David H. Engvall, Esq.
                           Telecopier No.:  (703) 758-6134

Each such Notice shall be effective when actually received by the addressee or
when the attempted initial delivery is refused or when it cannot be made because
of a change of address of which the sending party has not been notified.

                  IN WITNESS WHEREOF, Borrower has duly executed this Note under
seal as of the date first above written.

WITNESS/ATTEST:                BORROWER:

/s/David H. Engvall            MVH HOLDINGS INC.,
---------------------------    a Delaware corporation

                               By: /s/Walter V. Purnell, Jr.         (SEAL)
                                  -----------------------------------------
                                  Name: Walter V. Purnell, Jr.
                                  Title:   President and Chief Executive Officer

Address:

10802 Parkridge Blvd
Reston, VA 20191

<PAGE>

                                    Exhibit A
                       (To Rare Senior Indebtedness Note)

Bay Harbour Management, LC
CFSC Wayland Advisers, Inc.
Highland Capital Management, L.P.
Morgan Stanley Investment Management
Romulus Holdings

<PAGE>

                                    Exhibit B

                       (To Rare Senior Indebtedness Note)

                                 MSV Agreements

1.        Amended and  Restated  Investment  Agreement,  dated as of October 12,
          2001, as amended,  by and among Mobile Satellite Ventures LLC, Motient
          Corporation,  TMI Communications and Company, Limited Partnership, and
          the other parties named therein.

2.        Limited  Partnership  Agreement,  dated as of November  26,  2001,  of
          Mobile Satellite Ventures LP.

3.        Stockholders'  Agreement,  dated as of November  26,  2001,  of Mobile
          Satellite Ventures GP Inc.

4.        Certificate of Incorporation of Mobile Satellite Ventures GP Inc.

5.        Bylaws of Mobile Satellite Ventures GP Inc.

6.        Convertible  Notes, in an aggregate  principal  amount of $55 million,
          issued by Mobile Satellite Ventures LP on November 26, 2001.

7.        Parent  Transfer/Drag Along Agreement,  dated as of November 26, 2001,
          by and  among  Mobile  Satellite  Ventures  LP,  Motient  Corporation,
          Motient Ventures Holding Inc., TMI Communications and Company, Limited
          Partnership, and the other parties named therein.

8.        Amended and Restated  Document  Standstill and Termination  Agreement,
          dated as of October 12, 2001, by and among Mobile  Satellite  Ventures
          LLC, Motient Corporation, Motient Services Inc., and the other parties
          named therein.

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