[Remainder of page intentionally left blank.]

Exhibit 10.4

		Promissory Note
Funding Date: December 23, 2015

FOR VALUE RECEIVED, LGSI EQUIPMENT OF INDIANA, LLC, a(n) Indiana limited liability company, (“Maker”), promises to pay to the order of KEY EQUIPMENT FINANCE, A DIVISION OF KEYBANK NATIONAL ASSOCIATION (“Holder”), the sum of Nine Million Six Hundred Eighty-Six Thousand Forty-One and 20/100 Dollars ($9,686,041.20) in lawful money of the United States of America (the “Principal”), with interest thereon as hereafter provided (“Interest”), to be paid in the manner set forth herein.

1. Relationship to Master Security Agreement. This Note is secured by the Master Security Agreement dated as of December 23, 2015 and Collateral Schedule No. 1 dated as of December 23, 2015 (together, the “Master Security Agreement”), and all terms and conditions contained therein are incorporated herein by reference. Capitalized terms used herein without definition shall have the meaning given them in the Master Security Agreement. Maker reaffirms all terms, conditions, representations and warranties contained in the Master Security Agreement except as they may be modified hereby.

2. Interest Rate. Interest on the balance of the Principal outstanding on this Note shall accrue from the Funding Date of this Note and shall be due and payable at a fixed rate of 3.75 % per annum (the “Interest Rate”). Interest shall be calculated on the basis of a 360-day year consisting of twelve 30-day months.

3. Usury; Place of Payment. (a) Holder does not intend to charge any amount in excess of the maximum amount of time price differential or interest, as applicable, permitted to be charged or collected by applicable law and any such excess amounts will be applied to payments due under this Note, in inverse order of maturity, with any surplus refunded to Maker.

(b) Payment of the Principal and Interest hereunder shall be made to Holder at 11030 Circle Point Road, 2^nd Floor, Westminster, CO 80020, or at such other place as Holder may designate from time to time in writing. Holder reserves the right to require payment on this Note to be made by wired federal funds or other immediately available funds.

4. Repayment Terms. The Principal and Interest shall be due and payable in sixty (60) consecutive monthly installments payable in arrears, each in an amount equal to One Hundred Seventy-Seven Thousand Two Hundred Ninety-Two and 51/100 Dollars ($177,292.51) commencing and payable on the date which is one month after the Funding Date and on the same day of each month thereafter (each, a “Note Payment Date”). In addition, Maker will pay a late payment charge of five percent (5%) of any payment due hereunder that is not paid on or before the date due hereunder.

5. Prepayment. Maker may not prepay, in whole or in part, the principal outstanding hereunder; provided, however, that so long as no Default shall have occurred and be continuing and Maker shall have given Holder at least five (5) days prior written notice, Maker may prepay, in whole or in part, the principal outstanding hereunder as follows:

6. Application of Payments. Prior to Default, each payment received on this Note shall be applied in the following order: (a) first, to all costs of collection, (b) second, to any unpaid late payment charges, (c) third, to any Handling Charge and Breakage Charge, (d) fourth, to Interest accrued as of the payment date and (e) fifth, to the balance, if any, of outstanding Principal as of the date received by Holder. Upon the occurrence and during the continuance of a Default, any payments in respect of the Secured Obligations and any proceeds of the Collateral when received by Holder in cash or its equivalent, will be applied first to costs of collection and, thereafter, in reduction of the Secured Obligations in such order and manner as Holder may direct in its sole discretion and, in such event, Maker irrevocably waives the right to direct the application of such payments and proceeds and acknowledges and agrees that Holder shall have the continuing and exclusive right to apply any and all such payments and proceeds in the Holder’s sole discretion.

7. Security. Payment of the Principal and Interest hereunder, and the performance and observance by Maker of all agreements, covenants and provisions contained herein, is secured by a first priority security interest in the Collateral.

8. General. Maker represents and warrants that this Note evidences a loan for business or commercial purposes. By executing this Note, Maker confirms (a) having read and understood the provisions hereof and (b) Maker’s agreement with all terms and conditions contained herein.

9. Waivers. MAKER AND ALL ENDORSERS, SURETIES, AND GUARANTORS HEREOF HEREBY JOINTLY AND SEVERALLY WAIVE PRESENTMENT FOR PAYMENT, DEMAND, NOTICE OF NON-PAYMENT OR DISHONOR, NOTICE OF INTENTION TO ACCELERATE THE MATURITY, NOTICE OF PROTEST AND PROTEST OF THIS NOTE.

10. Funding Date. The Funding Date for this Note shall be the date on which Holder disburses funds hereunder. IF THE FUNDING DATE IS LEFT BLANK, OR DOES NOT REFLECT THE ACTUAL DATE HOLDER DISBURSES FUNDS HEREUNDER, MAKER HEREBY AUTHORIZES HOLDER TO FILL IN THE CORRECT DATE AT THE TIME OF DISBURSEMENT.

THIS NOTE IS A LOAN DOCUMENT AND IS BEING DELIVERED IN, AND SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF, THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE, WITHOUT GIVING EFFECT TO ANY CHOICE OF LAW OR CONFLICT OF LAWS (OTHER THAN SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS LAW).

[Remainder of page intentionally left blank.]

IN WITNESS WHEREOF, Maker, intending to be legally bound, has caused this Note to be duly executed on the day and year first written above.

ATTACHMENT:

Collateral Schedule: This Note is secured by Collateral Schedule No.      dated as of                      to the Master Security Agreement.