Document:

<PAGE>
                                                                   Exhibit 10.24

EX-10.24 Fifth Amendment to Loan Agreement by and between the Company and
CommerceBank, N.A. dated as of August 15, 2003.

                                 FIFTH AMENDMENT
                                TO LOAN AGREEMENT

         THIS FIFTH AMENDMENT to LOAN AGREEMENT is entered into as of the 15th
day of August, 2003, by and between AESP, INC. (formerly known as Advanced
Electronic Support Products, Inc.), a Florida corporation (the "Borrower") and
COMMERCEBANK, N.A. (the "Bank").

                                    RECITALS:

A.       Borrower and Bank entered into that certain loan agreement (the "Loan
         Agreement") dated September 23, 1999 under the terms of which Bank
         agreed to lend Borrower $3,500,000.

B.       Borrower and Bank executed and delivered that certain First Amendment
         to Loan Agreement (the First Amendment") dated September 2, 2000
         between them. In connection with the First Amendment, Borrower executed
         and delivered to Bank that certain Renewal Promissory Note dated
         September 2, 2000 (the "Renewal Note") in the original principal amount
         of $3,500,000.

C.       Borrower and Bank executed and delivered that certain Second Amendment
         to Loan Agreement (the Second Amendment") dated March 16, 2001 between
         them. In connection with the Second Amendment, Borrower executed and
         delivered to Bank that certain Renewal Promissory Note dated March 16,
         2001 (the "Second Renewal Note") in the original principal amount of
         $4,000,000.

D.       Borrower and Bank executed and delivered that certain Third Amendment
         to Loan Agreement (the Third Amendment") dated September 21, 2001
         between them. In connection with the Third Amendment, Borrower executed
         and delivered to Bank that certain Renewal Promissory Note dated
         September 21, 2001 (the "Third Renewal Note") in the original principal
         amount of $4,000,000.

E.       Borrower and Bank executed and delivered that certain Extension Letter
         Agreement (the "Letter Agreement") dated September 18, 2002 between
         them, which, among other things, extended the term of the Line of
         Credit until January 23, 2003 and reduced the Maximum Line of Credit
         Amount to $1,900,000.

F.       Borrower and Bank executed and delivered that certain Fourth Amendment
         to Loan Agreement (the Fourth Amendment") dated January 17, 2003
         between them. In connection with the Fourth Amendment, Borrower
         executed and delivered to Bank that certain Renewal Promissory Note
         dated January 17, 2003 (the "Fourth Renewal Note") in the original
         principal amount of $1,900,000.

F.       Borrower and Bank desire to amend certain terms of the Loan Agreement,
         as amended, pursuant to the terms hereof to among other things extend
         the term of the Line of Credit.

<PAGE>

         NOW, THEREFORE, in consideration of the agreements set forth herein and
other good and valuable consideration, the parties hereto hereby agree as
follows:

         SECTION 1. DEFINITIONS. All capitalized terms used herein shall have
the same meanings as used in Section 1 of the Loan Agreement, unless otherwise
defined in this Fifth Amendment.

         SECTION 2. AMENDMENTS TO LOAN AGREEMENT. The Loan Agreement is hereby
amended in the following respects:

                  (a) PERMANENT REDUCTION AND TERMINATION OF LINE OF CREDIT. The
existing section 2.9 of the Loan Agreement shall be deleted and replaced by the
following:

                           "2.9 Permanent Reduction and Termination of Line of
                  Credit. (a) Borrower shall be make a principal payment on or
                  before September 30, 2003 of not less than One Million Dollars
                  ($1,000,000). If Borrower obtains a new lending arrangement to
                  enable it to make such principal payment, all of the available
                  credit under such financing arrangement shall be utilized to
                  make such principal payment. Such prepayment shall permanently
                  reduce the Maximum Line of Credit Amount by the amount of such
                  prepayment. In the event that the Borrower makes the minimum
                  prepayment described above, but fails to pay the Line of
                  Credit in full by September 30, 2003, Borrower shall pay to
                  Lender an extension fee of Ten Thousand Dollars ($10,000) by
                  September 30, 2003. Bank agrees to consider in good faith any
                  request from Borrower for the Bank to release it's lien on
                  Receivables; provided that (1) Borrower provides Bank with
                  copies of all documentation associated with such financing in
                  advance to facilitate Bank's credit evaluation of such
                  transaction and the final documentation for such transaction
                  shall be satisfactory to Bank, (2) the Receivables being
                  released are being pledged to a lender who is providing
                  financing to enable Borrower to make the payments required by
                  this Section 2.9, (3) Bank 's internal credit committee is
                  satisfied in its sole and absolute discretion with the terms
                  of such new transaction and it' s impact on the Borrower's
                  credit position with the Bank, and (4) Borrower agrees to
                  execute and deliver to Bank any amendments, documents or
                  certificates deemed necessary by Bank as a result of such
                  transaction.

                           (b) On or before December 1, 2003 Borrower shall
                  satisfy all outstanding Obligations to Lender under the Line
                  of Credit. On the earlier to occur of a prepayment of all
                  Obligations hereunder or December 1, 2003, the Lender's
                  obligations to make Advances under the Line of Credit shall be
                  terminated, the Maximum Line of Credit Amount shall be reduced
                  to zero ($0), and all of Borrower's Obligations under the Loan
                  Agreement shall be immediately due and payable. Borrower
                  acknowledges that Borrower's obligations under this section

                                       2
<PAGE>

                  are not dependent on the availability of any particular form
                  of credit or any other condition.

                  (b) INVENTORY LIMITATION. Section 2.1(b)(ii)(1) of the Loan
Agreement shall be amended by deleting "Six Hundred Thousand ($600,000)" and
inserting "Five Hundred Thousand ($500,000)" as a replacement.

                  (c) FINANCIAL COVENANTS. Sub-sections 5.14 (a) and (b) of the
Loan Agreement shall be amended and restated as follows:

                                                     "(a) Debt to Tangible Net
                                    Worth. As of the end of each quarter, the
                                    Borrower shall have a debt to Tangible Net
                                    Worth ratio of not more than 3:1. For the
                                    quarters ending June 30, 2003 and September
                                    30, 2003, the Borrower shall have a debt to
                                    Tangible Net Worth ratio of not more than
                                    3.25:1.00. Such ratio shall be tested
                                    quarterly based on the Borrower's financial
                                    statements.

                                                     (b) Tangible Net Worth.
                                    Borrower shall at all times maintain a
                                    Tangible Net Worth of not less than
                                    $3,250,000. For the quarters ending June 30,
                                    2003 and September 30, 2003, Borrower shall
                                    at all times maintain a Tangible Net Worth
                                    of not less than $2,850,000"

                           (d) OTHER CONFORMING CHANGES: The Loan Agreement is
amended as follows:

                                    (i) Definition of Line of Credit Note. The
                  definition of Line of Credit Note shall be amended and
                  restated to read as follows:

                           "Line of Credit Note" shall mean that certain Fifth
                           Renewal Promissory Note, dated August 15, 2003, of
                           Borrower to Lender in the aggregate principal amount
                           of One Million Nine Hundred Thousand Dollars
                           ($1,900,000) which Fifth Renewal Promissory Note
                           amended, renewed and updated that certain Fourth
                           Renewal Promissory Note, dated January 17, 2003
                           executed by Borrower, in favor of Lender.

                                    (ii) Definition of Line of Credit Maturity
                  Date. The definition of Line of Credit Maturity Date shall be
                  amended and restated to read as follows:

                           "Line of Credit Maturity Date" shall mean September
                           30, 2003, or such earlier date as payment of the Line
                           of Credit shall be due and payable in full, whether
                           by mandatory prepayment, acceleration or otherwise;

                                       3
<PAGE>

                           provided, that such date shall be extended to
                           December 1, 2003 if Borrower makes the minimum
                           principal payment described in Section 2.9(a) of this
                           Agreement and an Event of Default shall not have
                           otherwise occurred and be continuing.

                                    (iii) Definition of Loan Documents. The
                  definition of the term "Loan Documents" in the Loan Agreement
                  shall include this Fifth Amendment, the Fourth Amendment, the
                  Letter Agreement, the Third Amendment, the Second Amendment,
                  the First Amendment, the Line of Credit Note, The Fifth
                  Renewal Note, the Security Agreement, the Commitment Letter
                  and all other documents executed and delivered by the parties
                  which evidence, secure or otherwise relate to the transaction
                  contemplated by this Fifth Amendment.

                                    (iv) Definition of Maximum Line of Credit
                  Amount. The definition of Maximum Line of Credit Amount shall
                  be amended and restated to read as follows:

                            "Maximum Line of Credit Amount" shall mean One
                           Million Nine Hundred Thousand Dollars ($1,900,000),
                           subject to reduction as described in Section 2.9 of
                           this Agreement".

                                    (v) Addition to Events of Default. Add the
                  following to Section 6.1 of the Loan Agreement:

                           "(m) Borrower's failure to make the prepayments
                           required under Section 2.9 of the Loan Agreement

         SECTION 3. NO EVENT OF DEFAULT. Borrower hereby certifies to Bank that
(a) it has kept, observed, performed and fulfilled each and every covenant,
provision and condition of the Loan Agreement and the other Loan Documents on
its part to be performed, (b) that all representations and warranties of the
Borrower made in the Loan Agreement are true and correct as of the date hereof
except for those representations and warranties which are made as of a
particular date, which such representations and warranties are true and correct
as of such date, (c) that no Event of Default or event which, with the passage
of time or the giving of notice or both, would constitute an Event of Default
has occurred and is continuing under the Loan Agreement, both before and after
giving effect to the amendment contemplated hereby, except any Event of Default
that has previously occurred and which has been specifically waived in writing
by the Bank, and (d) as of the date of this Fifth Amendment, Borrower has no
defenses or counterclaims with respect to Bank's rights to collect all amounts
due to it under the Loan Documents.

         SECTION 4. LOAN AGREEMENT CONFIRMED. The Loan Agreement, as amended
hereby, is reaffirmed and restated herein by Borrower and Bank, and said Loan
Agreement is hereby incorporated herein by reference as fully as if set forth in
its entirety in this Fifth Amendment.

                                       4
<PAGE>

         SECTION 5. CONDITIONS PRECEDENT TO BANK'S OBLIGATIONS. Banks
obligations under this Fifth Amendment shall be subject to the satisfaction of
each of the following conditions precedent:

                  (a) Borrower shall have executed and deliver this Fifth
Amendment, the Fifth Renewal Note and all other documents requested by Bank and
all Loan Documents shall be in full force and effect.

                  (b) Bank shall have received (i) a certificate of the
secretary of Borrower certifying that attached thereto are true and correct
copies of (A) the bylaws of Borrower, as amended through the date of such
certification and (B) resolutions duly adopted by Borrower' s board of directors
authorizing the execution, delivery and performance of the Loan Documents to
which Borrower is a party, which resolutions have not been altered or amended in
any respect and remain in full force and effect, (ii) the names of each of the
officers of Borrower authorized to execute and deliver the Loan Documents; (iii)
a certificate of the applicable State authority, dated as of a recent date, as
to the good standing of Borrower; and (iv) a certificate of the Florida
Department of State, dated as of a recent date, certifying that attached are
true and correct copies of the articles of incorporation of the Borrower filed
with such agency.

                  (c) Borrower shall cause to be delivered to Bank such other
documents, certificates or affidavits as may be reasonably requested by Bank in
connection with consummating the transaction evidenced by this Fifth Amendment.

                  (d) An opinion of counsel from counsel to Borrower in a form
reasonably satisfactory to Lender.

                  (e) Borrower shall pay to lender an extension fee in the
amount of Fifteen Thousand Dollars ($15,000) on the date of this Fifth
Agreement.

         SECTION 6.  MISCELLANEOUS.

                  (a) INVALIDITY. In the event that any one or more of the
provisions contained in this Fifth Amendment shall, for any reason, be held
invalid, illegal or unenforceable in any respect, such invalidity, illegality or
unenforceability shall not affect any other provision of this Fifth Amendment.

                  (b) COUNTERPARTS. This Fifth Amendment may be executed in
several counterparts, and it shall not be necessary that the signatures of all
parties hereto be contained on any one counterpart hereof; each counterpart
shall be deemed an original, but all of which together shall constitute one and
the same instrument.

                  (c) REFERENCE. From and after the effective date hereof, all
references to the Loan Agreement shall be deemed to be references to the Loan
Agreement as amended by this Fifth Amendment.

                                       5
<PAGE>

                  (d) GOVERNING LAW. THIS Fifth AMENDMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF FLORIDA
WITHOUT GIVING EFFECT TO ITS CONFLICT OF LAW PRINCIPLES.

                  (e) GOVERNING DOCUMENT. In the event of a conflict between the
terms and conditions of this Fifth Amendment and the Commitment Letter, the
terms and conditions of this Fifth Amendment shall control in all respects.

                            SIGNATURE PAGE TO FOLLOW

<PAGE>

IN WITNESS WHEREOF, the parties hereto have caused this Fifth Amendment to Loan
Agreement to be duly executed and delivered by their respective representatives
thereunto duly authorized as of the date first above written.

                                       Borrower:

                                       AESP, INC.

                                       By: /s/ Roman Briskin
                                           -------------------------------------
                                       Name: Roman Briskin
                                       Its:  Vice President

                                       Bank:

                                       COMMERCEBANK, N.A.

                                       By: /s/ Alan L. Hills
                                           -------------------------------------
                                       Name: Alan L. Hills
                                       Its:  Vice President<PAGE>

Exhibit 10.25

EX-10.25 Renewal Promissory Note dated as of August 15, 2003

                             RENEWAL PROMISSORY NOTE

$1,900,000.00
                              Executed on board the vessel "Palm Breeze Express"
                                                    outside the State of Florida
                                                           as of August 15, 2003

         FOR VALUE RECEIVED, the undersigned, AESP, INC., a Florida corporation,
(the "Maker"), promises to pay to the order of COMMERCEBANK, N.A. and assigns
(collectively "Lender"), the principal sum of the lesser of (i) One Million Nine
Hundred Thousand and 00/100 DOLLARS ($1,900,000) on the terms set forth herein,
or (ii) the amount actually advanced to the Maker and outstanding in accordance
with the terms of the Line of Credit described in that certain loan agreement
(the "Loan Agreement"), dated September 23, 1999 between Maker and the Lender,
as it may be amended, supplemented, modified or restated from time to time, plus
interest on the unpaid principal balance on the terms set forth herein.

         All defined terms used herein shall have the meanings assigned in the
Loan Agreement except to the extent such terms are defined or limited herein.

         This renewal promissory note (this "Note") renews the outstanding
principal amount of that certain renewal promissory note (the "Fourth Renewal
Note") in the original principal amount of $1,900,000, from Borrower to Lender,
dated January 17, 2003, and is not intended to be a novation of the obligations
evidenced by the Fourth Renewal Note.

         Principal and interest shall be payable, as follows:

         From the date of this Note through September 30, 2003, interest shall
be due on the outstanding principal amount of this Note at a floating rate equal
to the Wall Street Journal Prime Rate (hereinafter defined) plus four percent
(4%) (the "Initial Note Rate"). Beginning on October 1, 2003 and continuing
until December 1, 2003 (the "Maturity Date"), interest shall be due on the
outstanding principal amount of this Note at a floating rate equal to the Wall
Street Journal Prime Rate (hereinafter defined) plus six percent (6%) (the
"Final Note Rate"). The Initial Note Rate and the Final Note Rate shall
hereinafter be collectively referred to as the "Note Rate". The Note Rate shall
be a floating rate and shall initially be set as of the date of this promissory
note and shall be adjusted daily based on changes to the Wall Street Journal
Prime Rate as of such date. All changes in the Note Rate shall be effective as
of the date of change in the Wall Street Journal Prime Rate. Interest shall be
payable on the twentieth (20th) day of each consecutive calendar month prior to
the Maturity Date (hereinafter defined), commencing August 20, 2003. All
remaining unpaid principal and interest due thereon and all other amounts owing
under this Note and the Loan Documents (hereinafter defined), shall be due and
payable in full in no event later than the Maturity Date. "Wall Street Journal
Prime Rate" shall mean the prime rate as reported in the money rate column of
the "Wall Street Journal" on the date of determination. Interest shall be
computed on the basis of a 360 day year for the actual number of days in the
applicable period.

<PAGE>

         Prepayments shall be made and shall be applied as described in the Loan
Agreement. Maker may prepay the principal amount outstanding hereunder without
penalty.

         All installments of principal and/or interest are payable at the
offices of CommerceBank, 220 Alhambra Circle, Coral Gables, FL 33134, or at such
other place as Lender hereof may, from time to time, designate in writing, in
lawful money of the United States of America, which shall be in legal tender for
public and private debts at the time of payment.

         Maker may prepay this Note at any time without penalty.

         If default is made in the payment of any part of the principal of or
interest due under the terms of this Note or upon an Event of Default under the
Loan Agreement (and such default is not cured after notice thereof, if required
under the applicable loan document, and the expiration of any applicable grace
period), then this Note shall be in default and the entire principal sum and
accrued interest shall become due and payable at once without notice and demand
at the option of Lender. While in default, the principal of this Note shall bear
interest at a rate equal to the maximum rate permitted under applicable law (the
"Default Rate").

         In addition to the above, Lender may collect a late charge not to
exceed an amount equal to five percent (5%) of any installment which is not paid
within twenty (20) days of the due date thereof to cover the extra expense
involved in handling delinquent payments, provided that: (i) collection of said
late charge shall not be deemed a waiver by Lender of any of its other rights
under this Note and the Loan Agreement, the Security Agreement or any other
instrument given to secure this indebtedness, and (ii) such late charge shall
not apply to any payment of principal under Section 2.9 of the Loan Agreement.

         It is agreed that each maker and endorser, jointly and severally, shall
pay all reasonable costs of collection, including reasonable attorneys' fees, on
failure to pay any principal or interest when due on this Note. Such costs and
attorneys' fees shall include, but not be limited to, reasonable attorneys' fees
and paralegal fees incurred by Lender hereof in any and all judicial
proceedings, including appellate proceedings, arising out of enforcement and/or
collateral securing this indebtedness, whether such proceedings arise before or
after entry of final judgment.

         In case any provision (or any part of any provision) contained in this
Note shall for any reason be held to be invalid, illegal or unenforceable in any
respect, such invalidity, illegality or enforceability shall not affect any
other provision (or remaining part of the affected provision) of this Note, but
this Note shall be construed as if such invalid, illegal or unenforceable
provision (or part thereof) had never been contained herein, but only to the
extent it is invalid, illegal or unenforceable.

         Notwithstanding any provision of this Note and/or any instrument
securing payment of this Note to the contrary, it is the intent of the
undersigned Maker and Lender that Lender hereof shall never be entitled to
receive, collect or apply as interest on principal of the indebtedness any
amount in excess of the maximum rate of interest permitted to be charged by
applicable law; and

                                       2
<PAGE>

in the event Lender ever receives, collects, or applies as interest any such
excess, such amount which should be excessive interest shall be deemed a partial
prepayment of principal and treated hereunder as such; and, if the principal of
the indebtedness secured hereby is paid in full, any remaining excess funds
shall forthwith be paid to Maker. In determining whether or not the interest
paid or payable under any specific contingency exceeds the highest lawful rate,
Maker and Lender shall, to the maximum extent permitted under applicable law (a)
characterize any non-principal payment as an expense, fee or premium rather than
as interest (b) exclude voluntary prepayments and the effects thereof, and (c)
amortize, prorate, allocate and spread, in equal parts, the total amount of
interest throughout the entire contemplated term of the indebtedness so that the
interest rate is uniform throughout the entire term of the indebtedness;
provided that if the indebtedness is paid and performed in full prior to the end
of the full contemplated term thereof, and if the interest received for the
actual period of existence thereof exceeds the maximum lawful rate, Lender shall
refund to Maker the amount of such excess or credit the amount of such excess
against the principal portion of the indebtedness, and in such event, Lender
shall not be subject to any penalties provided by any laws for contracting for,
charging, or receiving interest in excess of the maximum lawful rate. In no
contingency or event whatsoever shall the amount paid or agreed to be paid to
Lender for the use, forbearance or detention of the indebtedness collateralized
hereby exceed the maximum amount permissible under applicable law. If, from any
circumstances whatsoever, fulfillment of any provision hereof or any provision
of any instrument securing the primary obligation at the time performance of
such provision shall be due shall involve transcending the limit of validity
prescribed by applicable law, then, ipso facto, the obligation to be fulfilled
shall be reduced to the limit of such validity. This provision shall control
every other provision of this Note.

         Maker, and each surety, endorser, guarantor and other party liable for
the payment of any sums of money payable on this Note, severally waive the right
of exemption under the Constitution and Laws of Florida, presentment and demand
for payment, protest and notice of protest and nonpayment, notice of dishonor,
notice of demand or intent to demand, notice of maturity and all requirements
necessary to hold each of them liable as maker, surety, endorser, guarantor and
any other party liable for the payment of sums of money hereunder, and agree
that their liability on this Note shall not be affected by any renewal or
extension in the time of payment thereof or by any release or change in any
security for the payment of this Note, regardless of the number of such
renewals, extensions, releases or changes.

         Maker and Lender mutually understand, covenant and agree that the
provisions of this Note (i) shall be binding upon Maker and its successors and
assigns (except as herein otherwise set forth) and shall inure to the benefit of
Lender and its assigns including any subsequent holder of this Note and (ii)
shall be construed, governed and enforced in all respects by the laws of the
State of Florida, including the Usury Laws of said state.

         Time shall be of the essence of each and every covenant and promise
contained in this Note and every other instrument securing the repayment of this
Note.

         This Note is secured by that certain collateral described in that
certain Security Agreement (the "Security Agreement") dated September 23, 1999
between Maker and Lender and is to be construed according to the Laws of
Florida. Any default occurring under the Loan

                                       3
<PAGE>

Agreement (which default is not cured after notice thereof, if required under
the applicable Loan Document, and the expiration of any applicable grace period)
shall constitute a default under this Note, and Lender, at its option, may
declare this Note due and payable in full and may exercise its remedies under
the Security Agreement.

         Maker hereby submits to the jurisdiction of the courts of the State of
Florida in the event any litigation arising from or related to this Note is
commenced. Maker agrees that the Lender may institute any cause of action
against Maker involving this Note in the courts of Miami-Dade County, Florida,
and hereby waives any venue privilege or right to be sued in any other forum.

         THE MAKER HEREBY KNOWINGLY, VOLUNTARILY AND INTENTIONALLY WAIVE ANY
RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION, PROCEEDINGS,
OR COUNTERCLAIMS ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS OR ANY OF THE
LOAN DOCUMENTS. FURTHER, THE MAKER HEREBY CERTIFIES THAT NO REPRESENTATIVES OR
AGENTS OF THE LENDER NOR THE MAKER'S OR THE LENDER'S COUNSEL HAS REPRESENTED,
EXPRESSED OR OTHERWISE, THAT THE LENDER WOULD NOT IN THE EVENT OF SUCH
LITIGATION SEEK TO ENFORCE THIS WAIVER OF RIGHT TO JURY TRIAL PROVISION. MAKER
ACKNOWLEDGES THAT THE LENDER HAS BEEN INDUCED TO ENTER INTO THIS TRANSACTION BY,
INTER ALIA, THE PROVISIONS OF THIS SECTION. THE MAKERS AGREE NOT TO SEEK TO
CONSOLIDATE ANY SUCH ACTION IN WHICH A JURY TRIAL HAS BEEN WAIVED WITH ANY OTHER
ACTION BY WHICH A JURY TRIAL CANNOT BE WAIVED.

         IN WITNESS WHEREOF, the undersigned have executed and delivered this
Note the day and year first hereinabove provided.

                                       AESP, INC.

                                       By: /s/ Roman Briskin
                                           -------------------------------------
                                       Name: Roman Briskin
                                       Title: Vice President

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