Document:

AMENDMENT TO EMPLOYMENT AGREEMENT

EXHIBIT 10.2

AMENDMENT TO EMPLOYMENT AGREEMENT

This Amendment is dated this ___ day of March, 2006, and is effective as of January 4, 2006, by and between SLS International, Inc., a Delaware corporation (“the Company”), and Steven Lamar (“Employee”).

RECITALS:

The Company and Employee entered into an Employment Agreement, dated June 17, 2005 (the “Employment Agreement”), by which Employee agreed to continue to serve as the President of the Company for a term commencing on June 17, 2005 and ending on June 17, 2008, or a certain anniversary thereof as more particularly described in the Employment Agreement.

Pursuant to the Employment Agreement, the Company agreed to grant 500,000 shares of the Company’s common stock to Employee in January 2006, subject to stockholder approval of the Company’s 2005 Stock Incentive Plan.   Employee desires to forego receipt of such grant of the Company’s common stock, and in consideration therefor, Employee will not be required to pay any withholding taxes associated with the proposed grant. 

AGREEMENT:

NOW THEREFORE, in consideration of the mutual covenants and agreements set forth below, the receipt and sufficiency of which is hereby acknowledged, the Company and Employee hereby covenant and agree as follows:

1.

Section 3(d) of the Employment Agreement is hereby deleted in its entirety.

2.

Employee and the Company each represent and agree that there are no agreements, written or otherwise, whereby Employee will receive any consideration in lieu of the grant of stock that Employee was previously entitled to receive pursuant to Section 3(d) of the Employment Agreement.

3.

The remainder of the Employment Agreement shall continue in full force and effect with no amendment, unless further amended in writing pursuant to Section 12(h) of the Employment Agreement.

IN WITNESS WHEREOF, the parties hereto have executed this Employment Agreement on the date first written above.

EMPLOYEE

SLS INTERNATIONAL, INC.

___________________________

By:_______________________________

Steven Lamar

Name: ____________________________

Its:_______________________________AMENDMENT TO EMPLOYMENT AGREEMENT

EXHIBIT 10.3

AMENDMENT TO EMPLOYMENT AGREEMENT

This Amendment is dated this ___ day of March, 2006, and is effective as of January 4, 2006, by and between SLS International, Inc., a Delaware corporation (“the Company”), and Michael L. Maples (“Employee”).

RECITALS:

The Company and Employee entered into an Employment Agreement, dated June 17, 2005 (the “Employment Agreement”), by which Employee agreed to continue to serve as the Chief Financial Officer and Chief Operating Officer of the Company for a term commencing on June 17, 2005 and ending on June 17, 2008, or a certain anniversary thereof as more particularly described in the Employment Agreement.

Pursuant to the Employment Agreement, the Company agreed to grant 125,000 shares of the Company’s common stock to Employee in January 2006, subject to stockholder approval of the Company’s 2005 Stock Incentive Plan.   Employee desires to forego receipt of such grant of the Company’s common stock, and in consideration therefor, Employee will not be required to pay any withholding taxes associated with the proposed grant. 

AGREEMENT:

NOW THEREFORE, in consideration of the mutual covenants and agreements set forth below, the receipt and sufficiency of which is hereby acknowledged, the Company and Employee hereby covenant and agree as follows:

1.

Section 3(d) of the Employment Agreement is hereby deleted in its entirety.

2.

Employee and the Company each represent and agree that there are no agreements, written or otherwise, whereby Employee will receive any consideration in lieu of the grant of stock that Employee was previously entitled to receive pursuant to Section 3(d) of the Employment Agreement.

3.

The remainder of the Employment Agreement shall continue in full force and effect with no amendment, unless further amended in writing pursuant to Section 12(h) of the Employment Agreement.

IN WITNESS WHEREOF, the parties hereto have executed this Employment Agreement on the date first written above.

EMPLOYEE

SLS INTERNATIONAL, INC.

___________________________

By:_______________________________

Michael L. Maples

Name: ____________________________

Its:_______________________________<PAGE>

                                                                     EXHIBIT 4.3

                                                                  EXECUTION COPY

                             SUPPLEMENTAL INDENTURE
                                TO THE INDENTURE

                                AEARO COMPANY I
                                   as Issuer

                                      AND

           THE SUBSIDIARY GUARANTORS FROM TIME TO TIME PARTY HERETO,

                                      AND

                J.P. MORGAN TRUST COMPANY, NATIONAL ASSOCIATION
                                   as Trustee

--------------------------------------------------------------------------------

                             SUPPLEMENTAL INDENTURE

                           Dated as of March 13, 2006

                                       to

                                   Indenture

                           Dated as of April 7, 2004

                   8 1/4% Senior Subordinated Notes due 2012

<PAGE>

                             SUPPLEMENTAL INDENTURE

         THIS SUPPLEMENTAL INDENTURE, dated as of March 13, 2006 (the
"Supplemental Indenture"), is among Aearo Company I, a Delaware corporation (the
"Company"), the Guarantors from time to time party hereto (the "Guarantors") and
J.P. Morgan Trust Company, National Association, as trustee (the "Trustee").

         WHEREAS, the Company, the Guarantors and the Trustee have heretofore
executed and delivered that certain Indenture dated as of April 7, 2004 (the
"Indenture"), as amended and supplemented, pursuant to which the Company
authorized the issuance of its 8 1/4% Senior Subordinated Notes due 2012 (the
"Notes");

         WHEREAS, the Company issued $175,000,000 aggregate principal amount
of the Notes;

         WHEREAS, Section 9.02 of the Indenture provides that the Indenture may
be amended with the consent of the Holders of a majority in aggregate principal
amount of the Notes then outstanding (subject to certain exceptions);

         WHEREAS, the Company and the Guarantors desire and have requested the
Trustee to join with them in entering into this Supplemental Indenture for the
purpose of amending the Indenture in certain respects as permitted by Section
9.02 of the Indenture;

         WHEREAS, the execution and delivery of this Supplemental Indenture has
been authorized by Board of Directors of the Company and the Guarantors;

         WHEREAS, (1) the Company has received the consent of the Holders of a
majority in aggregate principal amount of the outstanding Notes and has
satisfied all other conditions precedent, if any, provided under the Indenture
to enable the Company, the Guarantors and the Trustee to enter into this
Supplemental Indenture, all as certified by an Officers' Certificate, delivered
to the Trustee simultaneously with the execution and delivery of this
Supplemental Indenture as contemplated by Section 7.02 of the Indenture, and (2)
the Company has delivered to the Trustee simultaneously with the execution and
delivery of this Supplemental Indenture an Opinion of Counsel relating to this
Supplemental Indenture as contemplated by Section 7.02 of the Indenture.

         NOW, THEREFORE, in consideration of the above premises, each party
hereby agrees, for the benefit of the others and for the equal and ratable
benefit of the Holders of the Notes, as follows:

                                   ARTICLE I

                                   DEFINITIONS

         SECTION 1.1 DELETION OF DEFINITIONS AND RELATED REFERENCES. Section
1.01 of the Indenture is hereby amended to delete in its entirety all terms and
their respective definitions for which all references are eliminated in the
Indenture as a result of the amendments set forth in Article II of this
Supplemental Indenture.

                                       2
<PAGE>

                                   ARTICLE II

                             AMENDMENTS TO INDENTURE

         SECTION 2.1 AMENDMENTS TO THE INDENTURE. The Indenture is hereby
amended by deleting the following sections of the Indenture and all references
thereto in the Indenture in their entirety:

<TABLE>
<S>                                                  <C>
         Section 4.03                                Limitation on Restricted Payments
         Section 4.04                                Limitation on Indebtedness
         Section 4.05                                Corporate Existence
         Section 4.06                                Payment of Taxes and Other Claims
         Section 4.07                                Maintenance of Properties and Insurance
         Section 4.08(b)                             Compliance Certificate; Notice of Default
         Section 4.09                                Compliance with Laws
         Section 4.10                                SEC Reports
         Section 4.12                                Limitation on Transactions with Affiliates
         Section 4.13                                Limitation on Dividends and Other Payment Restrictions
                                                     Affecting Subsidiaries
         Section 4.14                                Limitation on Liens
         Section 4.15                                Change of Control
         Section 4.16                                Limitation on Asset Sales
         Section 4.17                                Limitation on Preferred Stock of Subsidiaries
         Section 4.18                                Limitation on Incurrence of Senior Subordinated Debt
         Section 4.19                                Limitation of Guarantees by Restricted Subsidiaries
         Section 5.01 first paragraph (b), (c)       Merger, Consolidation and Sale of Assets
         Section 6.01(3), (4), (5)                   Events of Default
         Section 8.01(d)(3), (4), (7), (8)           Legal Defeasance and Covenant Defeasance
</TABLE>

                                  ARTICLE III

                            MISCELLANEOUS PROVISIONS

         SECTION 3.1 DEFINED TERMS. For all purposes of this Supplemental
Indenture, except as otherwise defined or unless the context otherwise requires,
terms used in capitalized form in this Supplemental Indenture and defined in the
Indenture have the meanings specified in the Indenture.

         SECTION 3.2 INDENTURE. Except as amended hereby, the Indenture is in
all respects ratified and confirmed and all the terms thereof shall remain in
full force and effect. This Supplemental Indenture shall form a part of the
Indenture for all purposes, and every Holder of Notes heretofore or hereafter
authenticated and delivered under the Indenture shall be bound by the Indenture
as amended hereby. In the case of conflict between the Indenture and this
Supplemental Indenture, the provisions of this Supplemental Indenture shall
control.

                                       3
<PAGE>

         SECTION 3.3 GOVERNING LAW. THIS SUPPLEMENTAL INDENTURE WILL BE GOVERNED
BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK BUT
WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT
THAT THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE REQUIRED
THEREBY. EACH OF THE PARTIES HERETO AGREES TO SUBMIT TO THE JURISDICTION OF THE
COURTS OF THE STATE OF NEW YORK IN ANY ACTION OR PROCEEDING ARISING OUT OF OR
RELATING TO THIS SUPPLEMENTAL INDENTURE.

         SECTION 3.4 SUCCESSORS. All agreements of the Company, the Guarantors
and the Trustee in this Supplemental Indenture and the Notes shall bind their
respective successors.

         SECTION 3.5 DUPLICATE ORIGINALS. All parties may sign any number of
copies of this Supplemental Indenture. Each signed copy shall be an original,
but all of them together shall represent the same agreement.

         SECTION 3.6 SEVERABILITY. In case any one or more of the provisions in
this Supplemental Indenture or in the Notes shall be held invalid, illegal or
unenforceable, in any respect for any reason, the validity, legality and
enforceability of any such provision in every other respect and of the remaining
provisions shall not in any way be affected or impaired thereby, it being
intended that all of the provisions hereof shall be enforceable to the full
extent permitted by law.

         SECTION 3.7 TRUSTEE DISCLAIMER. The Trustee accepts the amendment of
the Indenture effected by this Supplemental Indenture and agrees to execute the
trust created by the Indenture as hereby amended, but on the terms and
conditions set forth in the Indenture, including the terms and provisions
defining and limiting the liabilities and responsibilities of the Trustee, which
terms and provisions shall in like manner define and limit its liabilities and
responsibilities in the performance of the trust created by the Indenture as
hereby amended, and without limiting the generality of the foregoing, the
Trustee shall not be responsible in any manner whatsoever for or with respect to
any of the recitals or statements contained herein, all of which recitals or
statements are made solely by the Company, and the Trustee makes no
representation with respect to any such matters. Additionally, the Trustee makes
no representations as to the validity or sufficiency of this Supplemental
Indenture.

SECTION 3.8 EFFECTIVENESS: OPERATIVENESS

         (a) This Supplemental Indenture will become effective and binding upon
the Company, the Guarantors, the Trustee and the Holders as of the date on which
the Opinion of Counsel and Officers' Certificate (each as defined in the
Indenture) required by Section 7.02 of the Indenture is delivered to the
Trustee; and

         (b) The provisions set forth in Article I and Article II of this
Supplemental Indenture will become operative upon and simultaneously with, and
shall have no force or effect prior to, the delivery by the Company to the
Trustee of an Officers' Certificate to the effect that the Company has accepted
for purchase, and has delivered payment in respect of, at least a majority in
aggregate principal amount of the outstanding Notes.

                                       4
<PAGE>

         SECTION 3.9 ENDORSEMENT AND CHANGE OF FORM OF NOTES. Any Notes
authenticated and delivered after the close of business on the date that this
Supplemental Indenture becomes effective may be stamped, imprinted or otherwise
legended by the Trustee, with a notation as follows:

          "Effective as of March 13, 2006, substantially all of the
          restrictive covenants of the Company, certain of the Events of
          Default provisions and certain defeasance provisions have been
          eliminated, as provided in the Supplemental Indenture, dated
          as of March 13, 2006. Reference is hereby made to said
          Supplemental Indenture, copies of which are on file with the
          Trustee, for a description of the amendments made therein."

SECTION 3.10 EFFECT OF HEADINGS. The headings of the Articles and Sections of
this Supplemental Indenture have been inserted for convenience of reference
only, are not intended to be considered a part hereof and shall not modify or
restrict any of the terms or provision hereof.

            [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]

                                       5
<PAGE>

IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture
to be duly executed as of the day and year written above.

                                  AEARO COMPANY I
                                       as the Issuer

                                  By:  /s/ Jeffrey S. Kulka
                                       -------------------------------------
                                       Name: Jeffrey S. Kulka
                                       Title: Senior Vice President,
                                              CFO and Secretary

                                  CABOT SAFETY INTERMEDIATE CORPORATION
                                     as a Guarantor

                                  By:    /s/ Jeffrey S. Kulka
                                       -------------------------------------
                                         Name: Jeffrey S. Kulka
                                         Title: Vice President - Finance,
                                                Treasurer, Secretary

                                  J.P. MORGAN TRUST COMPANY,
                                       NATIONAL ASSOCIATION,
                                       as Trustee

                                  By:  /s/ George N. Reaves
                                       -------------------------------------
                                       Name:  George N. Reaves
                                       Title: Vice President

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