Document:

<PAGE>

                                                                  EXHIBIT 10.8

         SIXTH AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT
                          DATED AS OF FEBRUARY 23, 2005

                  This SIXTH AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT
AGREEMENT (together with all Exhibits, Schedules and Annexes hereto, this
"Amendment") is among CORRECTIONS CORPORATION OF AMERICA, a Maryland corporation
(the "Borrower"), the Lenders (as defined below), including each Issuing Lender,
DEUTSCHE BANK SECURITIES INC., as Syndication Agent, SOCIETE GENERALE, as
Documentation Agent, and LEHMAN COMMERCIAL PAPER INC., as administrative agent
for the Lenders (in such capacity, the "Administrative Agent").

                             PRELIMINARY STATEMENTS:

         A. The Borrower, the lenders party thereto (the "Lenders"), the
Administrative Agent, Lehman Brothers Inc., as lead arranger and sole
book-running manager, Deutsche Bank Securities Inc. and UBS Warburg LLC, as
co-syndication agents, and Societe Generale, as documentation agent, have
entered into a Third Amended and Restated Credit Agreement, dated as of May 3,
2002 (together with all Annexes, Exhibits and Schedules thereto and as amended,
modified or supplemented from time to time, the "Credit Agreement"; capitalized
terms used and not otherwise defined herein shall have the meanings ascribed to
such terms in the Credit Agreement; terms defined in Section 1 hereof are used
herein as defined therein); and

         B. The Borrower desires to amend the Credit Agreement to permit Letters
of Credit to expire after the Revolving Credit Termination Date, and the Agents,
the Issuing Lender and the Lenders have agreed to amend the Credit Agreement to
permit Letters of Credit to expire after the Revolving Credit Termination Date
upon the terms and conditions set forth herein.

                  NOW, THEREFORE, in consideration of the premises and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

1. AMENDMENTS TO CREDIT AGREEMENT TO BE EFFECTIVE ON THE SIXTH AMENDMENT
EFFECTIVE DATE.

         (a) Section 3.1(a) of the Credit Agreement is hereby amended and
restated in its entirety to read as follows:

                  (a) Subject to the terms and conditions hereof, the Issuing
         Lender, in reliance on the agreements of the other Revolving Credit
         Lenders set forth in Section 3.4(a), agrees to issue standby letters of
         credit ("Letters of Credit") for the account of the Borrower on any
         Business Day prior to the date that is five Business Days prior to the
         Scheduled Revolving Credit Termination Date in such form as may be
         approved from time to time by the Issuing Lender; provided that the
         Issuing Lender shall have no obligation to issue any Letter of Credit
         if, after giving effect to such issuance, (i) the L/C Obligations would
         exceed the L/C Commitment or (ii) the aggregate amount of the Available
         Revolving Credit Commitments would be less than zero. Each Letter of
         Credit shall (i) be denominated in Dollars and (ii) expire no later
         than the earlier of (x) the first anniversary of its date of

<PAGE>

         issuance and (y) the date that is five Business Days prior to the
         Scheduled Revolving Credit Termination Date; provided that any Letter
         of Credit with a one-year term may provide for the renewal thereof for
         additional one-year periods (which shall in no event extend beyond the
         date referred to in clause (y) above). Notwithstanding the foregoing,
         the Issuing Lender agrees to issue Letters of Credit with an expiration
         date later than the date specified in the immediately preceding
         sentence (but no later than one year from the date of issuance thereof)
         in reliance upon the Borrower's agreement to cash collateralize such
         Letters of Credit in accordance with Section 10.15(c) by the date that
         is 30 days prior to the Scheduled Revolving Credit Termination Date,
         and the Borrower so agrees to cash collateralize such Letters of Credit
         by such date, it being understood that until the Loans, the
         Reimbursement Obligations and the other Obligations under the Loan
         Documents are paid in full, the Commitments have been terminated and no
         other Letters of Credit shall be outstanding, such cash collateral
         shall be subject to the rights of each other Lender under Section 10.7.

         (b) Section 8(a) of the Credit Agreement is hereby amended and restated
in its entirety to read as follows:

                  (a) The Borrower shall fail to pay any principal of any Loan
         or Reimbursement Obligation when due in accordance with the terms
         hereof, or the Borrower shall fail to pay any interest on any Loan or
         Reimbursement Obligation, or any Loan Party shall fail to pay any other
         amount payable hereunder or under any other Loan Document, within five
         days after any such interest or other amount becomes due in accordance
         with the terms hereof, or the Borrower shall fail to cash collateralize
         any Letter of Credit expiring after the Scheduled Revolving Credit
         Termination Date in accordance with Sections 3.1(a) and 10.15(c); or

         (c) Section 10.15 of the Credit Agreement is hereby amended by
inserting the following new paragraph (c) at the end thereof:

                  (c) For purposes of this Agreement and the other Loan
         Documents, a Letter of Credit shall be deemed not to be outstanding if
         (i) the Loans, the Reimbursement Obligations and the other Obligations
         under the Loan Documents shall have been paid in full and the
         Commitments have been terminated and (ii) the Borrower has either (x)
         supported such Letter of Credit, on terms and conditions reasonably
         acceptable to the corresponding Issuing Lender, with another letter of
         credit from a financial institution reasonably acceptable to the
         Issuing Lender or (y) provided the Issuing Lender with cash collateral
         in an amount equal to 105% of the aggregate amount available to be
         drawn under such Letter of Credit. The Issuing Lender hereby
         acknowledges and agrees that if a Letter of Credit has been supported
         with another letter or credit or cash collateralized as provided in
         this Section, all obligations of the Lenders with respect to such
         Letters of Credit shall terminate, including the obligations of the
         Lenders to purchase participations in such Letters of Credit pursuant
         to Section 3.4 and the obligations of the Lenders to make Revolving
         Loans pursuant to Sections 2.4, 2.5 and 3.5.

2. CONDITIONS TO EFFECTIVENESS. The effectiveness of the amendments contained in
Section 1 of this Amendment are conditioned upon satisfaction of the following
conditions (the date on which all such conditions have been satisfied being
referred to herein as the "Sixth Amendment Effective Date"):

                                       2
<PAGE>

         (a) the Administrative Agent shall have received signed written
authorization from the requisite Lenders to execute this Amendment, and shall
have received counterparts of this Amendment signed by the Borrower, the Issuing
Lender and the other Agents, and counterparts of the consent of the Subsidiary
Guarantors attached hereto as Annex 1 (the "Consent") executed by each of the
Subsidiary Guarantors;

         (b) each of the representations and warranties in Section 3 below shall
be true and correct in all material respects on and as of the Sixth Amendment
Effective Date;

         (c) the Administrative Agent shall have received payment in immediately
available funds of all expenses incurred by the Administrative Agent (including,
without limitation, legal fees) for which invoices have been presented on or
before the Sixth Amendment Effective Date; and

         (d) the Administrative Agent shall have received such other documents,
instruments, certificates, opinions and approvals as it may reasonably request.

3. REPRESENTATIONS AND WARRANTIES. The Borrower represents and warrants to the
Administrative Agent and the Lenders as follows:

         (a) Authority. The Borrower has the requisite corporate power and
authority to execute and deliver this Amendment and to perform its obligations
hereunder and under the Credit Agreement (as modified hereby). Each of the
Subsidiary Guarantors has the requisite corporate or other organizational power
and authority to execute and deliver the Consent. The execution, delivery and
performance (i) by the Borrower of this Amendment and the Credit Agreement (as
modified hereby) and the transactions contemplated hereby and thereby and (ii)
by the Subsidiary Guarantors of the Consent, in each case, have been duly
approved by all necessary corporate or other action of such Person, and no other
corporate or other organizational proceedings on the part of each such Person
are necessary to consummate such transactions.

         (b) Enforceability. This Amendment has been duly executed and delivered
by the Borrower. The Consent has been duly executed and delivered by each of the
Subsidiary Guarantors. Each of this Amendment and the Consent and, after giving
effect to this Amendment, the Credit Agreement and the other Loan Documents (i)
is the legal, valid and binding obligation of each Loan Party party hereto and
thereto, enforceable against such Loan Party in accordance with its terms,
except as may be limited by laws relating to the enforcement of creditors'
rights and general equitable principles (whether enforcement is sought by
proceedings in equity or at law) and (ii) is in full force and effect. Neither
the execution, delivery or performance of this Amendment, of the Consent or of
the Credit Agreement (as modified hereby), nor the performance of the
transactions contemplated hereby or thereby, will adversely affect the validity,
perfection or priority of the Administrative Agent's Lien on any of the
Collateral or its ability to realize thereon.

         (c) Representations and Warranties. After giving effect to this
Amendment, the representations and warranties contained in the Credit Agreement
and the other Loan Documents (other than any such representations and warranties
that, by their terms, are specifically made as of a date other than the date
hereof) are true and correct in all material respects on and as of the date
hereof as though made on and as of the date hereof.

                                       3
<PAGE>

         (d) No Conflicts. Neither the execution and delivery of this Amendment,
the Consent or the Credit Agreement (as modified hereby), nor the consummation
of the transactions contemplated hereby and thereby, nor the performance of and
compliance with the terms and provisions hereof or thereof by any Loan Party
will, at the time of such performance, (a) violate or conflict with any
provision of its articles or certificate of incorporation or bylaws or other
organizational or governing documents of such Person, (b) violate, contravene or
materially conflict with any Requirement of Law or any other law, regulation
(including, without limitation, Regulation U or Regulation X), order, writ,
judgment, injunction, decree or permit applicable to it, except for any
violation, contravention or conflict which could not reasonably be expected to
have a Material Adverse Effect, (c) (i) violate, contravene or conflict with the
contractual provisions of, or cause an event of default under, any Loan Document
or (ii) violate, contravene or conflict with the contractual provisions of, or
cause an event of default under, any other loan agreement, indenture, mortgage,
deed of trust, contract or other agreement or instrument to which it is a party
or by which it may be bound or (d) result in or require the creation of any Lien
(other than those contemplated in or created in connection with the Loan
Documents) upon or with respect to its properties. No consent or authorization
of, filing with, notice to or other act by or in respect of, any Governmental
Authority or any other Person is required in connection with the transactions
contemplated hereby.

         (e) No Default. Both before and after giving effect to this Amendment
and the transactions contemplated hereby, no event has occurred and is
continuing that constitutes a Default or Event of Default.

4. REFERENCE TO AND EFFECT ON CREDIT AGREEMENT.

         (a) Upon and after the effectiveness of this Amendment, each reference
in the Credit Agreement to "this Agreement", "hereunder", "hereof" or words of
like import referring to the Credit Agreement, and each reference in the other
Loan Documents to "the Credit Agreement", "thereunder", "thereof" or words of
like import referring to the Credit Agreement, shall mean and be a reference to
the Credit Agreement as modified hereby. This Amendment is a Loan Document.

         (b) Except as specifically modified above, the Credit Agreement and the
other Loan Documents are and shall continue to be in full force and effect and
are hereby in all respects ratified and confirmed. Without limiting the
generality of the foregoing, the Security Documents and all of the Collateral
described therein do and shall continue to secure the payment of all Obligations
under and as defined therein, in each case as modified hereby.

         (c) The execution, delivery and effectiveness of this Amendment shall
not, except as expressly provided herein, operate as a waiver of any right,
power or remedy of any Secured Party under any of the Loan Documents, nor,
except as expressly provided herein, constitute a waiver or amendment of any
provision of any of the Loan Documents.

5. COUNTERPARTS. This Amendment may be executed in any number of counterparts
and by different parties hereto in separate counterparts, each of which when so
executed and delivered shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement. Delivery of an executed
counterpart of a signature page to this Amendment by facsimile shall be
effective as delivery of a manually executed counterpart of this Amendment.

6. SEVERABILITY. Any provision of this Amendment that is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or

                                       4
<PAGE>

unenforceability without invalidating the remaining provisions hereof, and any
such prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction.

7. GOVERNING LAW. This Amendment shall be governed by, and construed in
accordance with, the laws of the State of New York.

                            [Signature page follows]

                                       5
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed by their respective officers thereunto duly authorized,
as of the date first written above.

                                          CORRECTIONS CORPORATION OF AMERICA,
                                          as Borrower

                                          By: /s/ Irving E. Lingo, Jr.
                                              ---------------------------------
                                          Name:  Irving E. Lingo, Jr.
                                          Title: Executive Vice President, Chief
                                                 Financial Officer

                                          LEHMAN COMMERCIAL PAPER INC.,
                                          as Administrative Agent

                                          By: /s/ Ritam Bhalla
                                              ----------------------------------
                                          Name:  Ritam Bhalla
                                          Title: Authorized Signatory

                                          DEUTSCHE BANK SECURITIES INC.,
                                          as Syndication Agent

                                          By: /s/ David S. Bailey
                                              ----------------------------------
                                          Name:  David S. Bailey
                                          Title: Managing Director

                                          SOCIETE GENERALE,
                                          as Documentation Agent

                                          By: /s/ Anne-Marie Dumortier
                                              ----------------------------------
                                          Name:  Anne-Marie Dumortier
                                          Title: Director

<PAGE>

                                                                     Annex 1

                        CONSENT OF SUBSIDIARY GUARANTORS

                  Each of the undersigned is a Subsidiary Guarantor of the
Obligations of the Borrower under the Credit Agreement and hereby (a) consents
to the foregoing Amendment, (b) acknowledges that notwithstanding the execution
and delivery of the foregoing Amendment, the obligations of each of the
undersigned Subsidiary Guarantors are not impaired or affected and all
guaranties given to the holders of Obligations and all Liens granted as security
for the Obligations continue in full force and effect, and (c) confirms and
ratifies its obligations under the Guarantee and Security Agreement and each
other Loan Document executed by it. Capitalized terms used herein without
definition shall have the meanings given to such terms in the Amendment to which
this Consent is attached or in the Credit Agreement referred to therein, as
applicable. This Consent shall be governed by, and construed in accordance with,
the laws of the State of New York.

                            [Signature page follows]

<PAGE>

                  IN WITNESS WHEREOF, each of the undersigned has executed and
delivered this Consent of Subsidiary Guarantors as of February 23, 2005.

                                          CCA OF TENNESSEE, LLC
                                          PRISON REALTY MANAGEMENT, INC.
                                          TECHNICAL AND BUSINESS INSTITUTE OF
                                             AMERICA, INC.
                                          CCA INTERNATIONAL, INC.
                                          CCA PROPERTIES OF AMERICA, LLC
                                          CCA PROPERTIES OF ARIZONA, LLC
                                          CCA PROPERTIES OF TENNESSEE, LLC
                                          CCA WESTERN PROPERTIES, INC.

                                          By: /s/ John D. Ferguson
                                              ----------------------------------
                                          Name:  John D. Ferguson
                                          Title: Chief Executive Officer

                                          CCA PROPERTIES OF TEXAS, L.P.

                                          By: /s/ John D. Ferguson
                                              ----------------------------------
                                          Name:  John D. Ferguson
                                          Title: Chief Executive Officer, CCA
                                                 Properties of America, LLC, as
                                                 General Partner

                                          TRANSCOR AMERICA LLC

                                          By: /s/ Todd J. Mullenger
                                              ----------------------------------
                                          Name:  Todd J. Mullenger
                                          Title: Vice President, Treasurer<PAGE>

                                                               EXHIBIT 10.17

                      NON-QUALIFIED STOCK OPTION AGREEMENT

         This NON-QUALIFIED STOCK OPTION AGREEMENT (the "Agreement") is made
this ___ day of ____________, ____, by and between CORRECTIONS CORPORATION OF
AMERICA, a Maryland corporation (the "Company"), and _________________________,
a resident of ____________ (the "Optionee").

                              W I T N E S S E T H:

         WHEREAS, the Company has assumed and adopted the Corrections
Corporation of America 1997 Employee Share Incentive Plan, as amended (the
"Plan"), which authorizes the Company to grant, among other things,
non-qualified stock options ("Options") to key employees of the Company and/or
its affiliates; and

         WHEREAS, the Company and Optionee wish to confirm the terms and
conditions of an Option granted to Optionee on __________, _____ (the "Date of
Grant").

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, it is agreed between the parties
hereto as follows:

         1. Definitions. Except as provided in this Agreement, or unless the
context otherwise requires, the terms used herein shall have the same meaning as
in the Plan.

         2. Grant of Option. Upon and subject to the terms, restrictions,
limitations and conditions stated herein, the Company hereby grants to Optionee
an Option to purchase up to __________ shares of the Company's Common Stock
(collectively, the "Option Shares").

         3. Option Price. The purchase price per Option Share shall be $_____
(the "Option Price").

         4. Exercise; Vesting; Forfeiture.

              (i) Except as otherwise provided herein, Optionee shall have the
right to exercise the Option, if and to the extent the Option has vested in
accordance with subparagraphs (iii) and (iv) below, at any time during the
ten-year period commencing on the Date of Grant; provided, however, that except
as otherwise provided in subparagraph (iv) below, Optionee may not exercise the
Option unless Optionee is on the date of exercise and continuously after the
Date of Grant an employee of: (a) the Company; (b) a Subsidiary; (c) an
Affiliate of the Company; or (d) a corporation issuing or assuming the Option in
a transaction to which Section 424 of the Code applies (or a Subsidiary of such
corporation) ((a), (b), (c) and (d) known collectively, herein, as the
"Employer").

              (ii) The Option shall be exercised by giving written notice of
such exercise to the Company in the form attached hereto as Exhibit A; provided,
however, that an Option may not be exercised at any one time as to fewer than
one hundred (100) shares (or such number of shares as to which the Option is
then exercisable if such number of shares is less than one hundred (100)). The
Option Price shall be paid or satisfied in full, at the time of exercise, in
cash, in shares of Common

<PAGE>

Stock owned by Optionee for at least six months having a Fair Market Value equal
to such Option Price or in a combination of cash and such shares of Common
Stock. In addition, payment may also be made in whole or in part in the form of
an option to acquire Common Stock or in the form of another award (based, in
each case, on the Fair Market Value of such option or Award on the date the
Option is exercised, as determined by the Committee).

         (iii) Subject to the provisions of subparagraph (iv) below, the Option
shall vest with respect to __________ of the Option Shares on each Vesting Date
(as herein defined). For purposes hereof, the term "Vesting Date" shall mean
each of the following _____ dates: ___________________________.

         (iv) In the event that: (a) Optionee dies while in the employ of the
Employer or within three (3) months after the termination of employment with
Employer for any reason; or (b) Optionee's employment with the Employer
terminates by reason of Optionee's Disability or Retirement, then in any such
case the Option shall vest in full and may be, unless earlier terminated or
expired, exercised by Optionee (or by Optionee's estate or by a person who
acquired the right to exercise such Option by bequest or inheritance or
otherwise by reason of the death or Disability of Optionee) at any time during
the stated term of the Option. In the event that there occurs a Change of
Control, then in such case the Option shall vest in full and, unless earlier
terminated or expired, may be exercised by Optionee (or by Optionee's estate or
by a person who acquired the right to exercise such Option by bequest or
inheritance or otherwise by reason of the death or Disability of Optionee)
within one (1) year following the Change in Control. Subject to the first
sentence of this subparagraph (iv), in the event that Optionee's employment with
the Employer terminates other than by reason of Optionee's death, Disability or
Retirement, then the Option, to the extent the Option has vested and unless it
earlier terminates or expires, may be exercised within three (3) months
following the termination of such employment, with the unvested portion of the
Option being forfeited. Nothing in this Agreement or in any Option granted
pursuant hereto shall confer upon Optionee any right to continue in the employ
or service of the Employer or interfere in any way with the right of the
Employer to terminate Optionee's employment at any time.

         5. Option and Option Shares Subject to Plan. The Option and the Option
Shares shall be subject to, and the Company and Optionee agree to be bound by,
all of the terms and conditions of the Plan, as the same shall be amended from
time to time in accordance with the terms thereof. A copy of the Plan, as
amended, is attached hereto as Exhibit B and made a part hereof as if fully set
out herein.

         6. Covenants and Representations of Optionee. Optionee represents,
warrants, covenants and agrees with the Company as follows:

                  (i) Optionee is not acquiring the Option Shares based upon any
representation, oral or written, by any person with respect to the future value
of, or income from, the Option Shares but rather upon an independent examination
and judgment as to the prospects of the Company;

                  (ii) Optionee is able to bear the economic risks of the
investment in the Option Shares, including the risk of a complete loss of his or
her investment therein;

                  (iii) Optionee understands and agrees that the Option Shares
may be issued and sold to Optionee without registration under any state law
relating to the registration of securities for

<PAGE>

sale, and in such event will be issued and sold in reliance on exemptions from
registration under appropriate state laws;

                  (iv) The Option Shares cannot be offered for sale, sold or
transferred by Optionee other than pursuant to the terms of this Agreement and
the Plan and: (A) an effective registration under applicable state securities
laws or in a transaction which is otherwise in compliance with such laws; (B) an
effective registration under the Securities Act of 1933, as amended (the "1933
Act"), or in a transaction otherwise in compliance with the 1933 Act; and (C)
evidence satisfactory to the Company of compliance with the securities laws of
all applicable jurisdictions. The Company shall be entitled to rely upon an
opinion of counsel satisfactory to it with respect to compliance with the
foregoing laws;

                  (v) The Company will be under no obligation to register (or
maintain the registration of) the Option Shares or to comply with any exemption
available for sale of the Option Shares without registration. The Company is
under no obligation to act in any manner so as to make Rule 144 promulgated
under the 1933 Act available with respect to sales of the Option Shares;

                  (vi) A legend indicating that the Option Shares have not been
registered under the applicable state securities laws and referring to any
applicable restrictions on transferability and sale of the Option Shares may be
placed on the certificate or certificates delivered to Optionee and any transfer
agent of the Company may be instructed to require compliance therewith;

                  (vii) Optionee realizes that the purchase of the Option Shares
is a speculative investment and that any possible profit therefrom is uncertain;

                  (viii) Optionee will notify the Company prior to any sale of
the Option Shares within one year of the date of the exercise of all or any
portion of the Option; and

                  (ix) The agreements, representations, warranties and covenants
made by Optionee herein extend to and apply to all of the Common Stock of the
Company issued to Optionee from time to time pursuant to this Option. Acceptance
by Optionee of the certificate(s) representing such Common Stock shall
constitute a confirmation by Optionee that all such agreements, representations,
warranties and covenants made herein shall be true and correct at such time.

         7. Withholding. If Optionee recognizes compensation income as a result
of the exercise of the Option granted hereunder, Optionee shall remit in cash to
the Company the minimum amount of federal and state income and employment tax
withholding which the Company is required to remit to the Internal Revenue
Service or applicable state department of revenue in accordance with the then
current provisions of the Code or applicable state law. Optionee shall pay the
full amount of such withholding simultaneously with the exercise of the Option
or upon the occurrence of any other event that results in the recognition of
compensation income by Optionee. The failure by Optionee to remit the full
amount of withholding due may, in the discretion of the Company, result in the
forfeiture of the related benefit notwithstanding any other provision of this
Agreement.

         8. Governing Law. This Agreement shall be construed, administered and
enforced according to the laws of the State of Maryland, without regard to the
conflicts of laws provisions thereof; provided, however, the Option may not be
exercised except, in the reasonable judgment of the Committee, in compliance
with exemptions under applicable state securities laws of the state in which
Optionee resides, and/or any other applicable securities laws.

<PAGE>

         9. Successors. This Agreement shall be binding upon and inure to the
benefits of the heirs, legal representatives, successors and permitted assigns
of the parties.

         10. Notice. Except as otherwise specified herein, all notices and other
communications under this Agreement shall be in writing and shall be deemed to
have been given if personally delivered or if sent by registered or certified
United States mail, return receipt requested, postage prepaid, addressed to the
proposed recipient at the last known address of such recipient. Any party may
designate any other address to which notices shall be sent by giving notice of
such address to the other parties in the same manner provided herein.

         11. Severability. In the event that any one or more of the provisions
or portion thereof contained in this Agreement shall for any reason be held to
be invalid, illegal or unenforceable in any respect, the same shall not
invalidate or otherwise affect any other provisions of this Agreement and this
Agreement shall be construed as if such invalid, illegal or unenforceable
provision or portion thereof had never been contained herein.

         12. Entire Agreement. Subject to the terms and conditions of the Plan,
this Agreement expresses the entire understanding and agreement of the parties
hereto with respect to such terms, restrictions and limitations. This Agreement
may be executed in two or more counterparts, each of which shall be deemed and
original but all of which shall constitute one and the same instrument.

         13. Violation. Any transfer, pledge, sale, assignment or hypothecation
of the Option except in accordance with this Agreement shall be a violation of
the terms hereof and shall be void and without effect.

         14. Headings. Section headings used herein are for convenience of
reference only and shall not be considered in interpreting this Agreement.

         15. Specific Performance. In the event of any actual or threatened
default in, or breach of, any of the terms, conditions and provisions of this
Agreement, the party or parties who are thereby aggrieved shall have the right
to specific performance and injunction in addition to any and all other rights
and remedies at law or in equity, and all such rights and remedies shall be
cumulative.

         16. Counterparts. This Agreement may be executed by the signatures of
each of the parties hereto, or to a counterpart of this Agreement, and all such
counterparts shall collectively constitute one Agreement. Facsimile signatures
shall constitute original signatures for purposes of this Agreement.

         IN WITNESS WHEREOF, the parties have executed this Agreement on the day
and year first set forth above.

                                          CORRECTIONS CORPORATION OF AMERICA

                                          By:
                                              ----------------------------------

                                          Title:
                                                 -------------------------------

<PAGE>

                                          OPTIONEE:

                                          Signature:
                                                    ----------------------------

                                          Name (printed):
                                                         -----------------------

<PAGE>

                                    EXHIBIT A

                             FORM OF EXERCISE NOTICE

<PAGE>

                                 EXERCISE NOTICE

                FOR OPTIONS TO PURCHASE SHARES OF COMMON STOCK OF
           CORRECTIONS CORPORATION OF AMERICA GRANTED PURSUANT TO THE
                       CORRECTIONS CORPORATION OF AMERICA
                       1997 EMPLOYEE SHARE INCENTIVE PLAN

Corrections Corporation of America:

         The undersigned, the holder of an option (the "Option") to purchase an
aggregate of ______ shares of the common stock, $0.01 par value per share (the
"Common Stock"), of Corrections Corporation of America, a Maryland corporation
(the "Corporation"), granted pursuant to the Corrections Corporation of America
1997 Employee Share Incentive Plan and hereby makes payable in full therefor:

         (i) $_____________ cash;

         (ii) _____________ shares of Common Stock;

         (iii) Options to purchase _____________ shares of Common Stock; or

         (iv) such other award consisting of _____________________________; and
requests that certificates for such shares be issued in the name of and
delivered to _________________ whose address is ______________________________;
and if such shares shall not include all of the shares issuable under said
Option, that a new option of like tenor and date for the balance of the shares
issuable thereunder be delivered to the undersigned. A copy of the agreement
representing the Option is provided herewith.

                                            OPTIONEE:

                                            Signature:
                                                       -------------------------

                                            Name (printed):
                                                            --------------------

<PAGE>

                                    EXHIBIT B

                       CORRECTIONS CORPORATION OF AMERICA
                       1997 EMPLOYEE SHARE INCENTIVE PLAN

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